Going to go look at a 6.5 turbo set-up to swap into this 90 'Burb. Engine is a 6.2 CUCV engine since the old one locked up. I've been reading up on this swap on here and have seen where you need to delete the AC or modify it with an s10. Modify what? the box on the firewall? What exactly if anyone knows? I'm accumulating parts as my shop is built but slowly setting it up for power. Want to have a project ready to go as soon as I move in to the house. Power in the shop or not!