He got it back???
Working ???
It only took 2 weeks to do.

As for compression ratio, idk if anyone makes a thicker head gasket, it will slightly lower c/r.
Or you will have to change pistons, another idea you could do, I have not done but took measurements from a stock piston and can bore out the block past the alusil cylinder coating to the steel walls and use pistons from a ford 4.6 3 valve.
Lots of options, I do not have the measurements handy but if I remember it will raise the engine to a 3.5 liter and can use stock rods, also can use a set of total seal gapless rings.
You can buy some shrink cams or find a good machine shop.
With tuning is the reason nobody turbos our cars.
If I remember a 04 chevy has 18,000 lines of coding and a 04 XFire, has 240,000 lines of coding.
If you can get the coding figured out and make it cost effective, you would probably have a few people driving there cars to you to code to run a turbo.
If it wasn't for matching up the instrument cluster and cruise control, the pentastar v6 bolts up to our nsg370 transmissions, and can code and turbo that, but changing out wiring harness, but then easy to surpass the Torque limitations of the nsg370, which is the same 6 speed used in the wrangler, and surprisingly nobody that I found has strengthened the nsg370 for the wrangler.