Got the Heatsink from AliExpress. Some of the fins were bent, but nothing I couldn't bend back into place easily. Couldn't really find a 3d print file that worked for my specific card and I thought to myself... why would I use plastic when I have a welder...

I am going to need a support stand for this thing. That's next on the build list.

Cool GTX
I was wondering if you were buying a used cover or going to 3D print one ....
 
Nice sheet metal work & IMO, exceptional with only hand tools @ home
 
How did you make the 90 degree bends, they look tight ... do you have a sheet metal break ?
 
If you ever want to use custom Fans with factory mounting, take a look at this thread EVGA RTX 3080 Ti FTW custom fans guide

I use to be a shift lead for the fabrication department of a place that made Truck boxes and cab racks, so I pulled that information from 10 or so years ago out from the cob webs I guess. 

I don't have a break sadly. Have had a 12" vice mounted break on my amazon wish list for the last 6 years or so, but haven't committed to paying almost $300 for it.
 
What i did here was, with a angle grinder, carefully make a line down where i needed the bend, to thin the material a little, then take two 1x1 steel bars and clamp them to each side. Then I would slowly work the metal into place, moving the clamps way to many times, and then in the final bend, tap it with a nice sized hammer. 
 
Today, I am still laying in bed, because every ounce of my body hurts from this thing! 

It looks like the Noctua line up pretty well for this situation. I will just have to make sure to set that max fan speed setting so they dont explode on a heavy load.

MidgetMania
Thanks for that link on the fans, i just ordered some Noctua NF-A12x25 fans that should arrive tonight. The plan today is to remove the old heat sink and clean up what I can, and install them when they arrive. Silly me was just thinking I could just plug them right in, but DUH!

Happy to Help
 
EK sells an adapter cable so the stock PCB fan header on the card, can be used with typical case fans.
 
You could buy directly from EK , one of their retailers like at PerformancePCS & I even see some on Amzn
 
(excerpt)

Details

EK-Cable PWM Fan Adapter for GPU is a simple adapter cable for connecting your GPU to PWM-enabled fans in your custom loop and thus controlling the PWM profiles based on the graphics card temperature. The cable is approximately 50cm long.
 

The fans i got comes with a lot of cables, do any of these look like the correct cable adapters. Such a horrible placement job by the photographer...

 
I also have this awesome RGB block and strip combo that im trying to figure out what to do with... 

is there a way to change your user name on this forum? this name is so old, it has to be updated.

one of the rubbers broke but its held in there really good so it doesnt matter. If needed i have the screws.

Cool GTX
Nice update

Haha, ahh, now I feel more like myself. Midget Mania was a nickname from 1996. Not sure why I used it on EVGA.

SUPER LEVEL!!! 

Cant get the fans to run off the graphics card... so for now I am having a program run them via GPU temps. Don't think the cables i got were correct. 

Back up and running. Did a 30 minute stress test yesterday with temps maxing out at 75C. Not bad, can't remember what I was getting before...

that is GREAT
 
Test adjusting the Voltage with your OC software. 
 
Usually 85% - 95% is the range where Temp drops (vs 100%) & performance is not impacted much if at all. 

Nvidia Boost will allow a higher MHz on the GPU if it is cooler; so you do not see any big drops in performance, outside of benchmark runs (then you want/ need better cooling & a cold room, to max your score ... keep GPU 50C or lower )

I've gotten it down to 71°C and I'm pretty happy with it.

Did a low volt overclock that's holding together pretty well.

Also adjusted it so my case fans react to the GPU.