So I'm going to try and post each project I've done. They probably wont be in any order of how they were done until I get caught up.
So this picture is of the 6.5 diesel that I had built. Specs on the that engine were AMG forged crank, 18:1 pistons, headstuds, center main girddle, .033 plunger DB2 injection pump and GM8 turbo. I never dynod the truck with that engine, wish I had. I'm thinking it made somewhere around 220/380 at the rear wheels. I base that by comparing 0 to 60 vs my dodge when it was stock.
So a number of years ago I decided that I was going to install an intercooler to help in my then quest for better performance from the built 6.5. I found an intercooler from an 05 duramax would fit with minimal modifications. At the time of this project I was still learning how to TIG weld and had mostly done mild steel. So this was my first aluminum TIG project. So the welds are kind crappy looking but they don't leak.
The first step was to make room to for the intercooler to occupy. The space the original a/c condesencer was the perfect spot. The main thing that changed was to remove the "boxes" that run vertically. With those out of the way the ic would fit width wise.
Now to make the ic fit.
If I remember correctly I cut off about 3 inches off the top. Then I capped the open ends of the tanks. In hindsight I should of reused the factory top mounts and in due time I'll fix a couple little things with how it's mounted.
I also cut off the bottom locating pins which I should of tried to reuse. Do to using the stock GM turbo setup, the turbo outlet is above the engine so I had to raise the inlet on the cooler. The inlet is made up of the original inlet and a piece of 4" channel. I also had to straighten out the inlet. I cut most of the way through and then used a piece of flatbed and wrapped it. It's kinda funky looking but works.

For my first major aluminum TIG project it came out decent.

The final product the outlet was extended by making a square tube out of 2x2x1/8 angle, I got it for free from my then job. So did with what I had.
There's a lot of little details I want to change but it works for now.