I'm looking to rebuild a 91 4.0 to drop in my ranger with the 2.9. I want some high comp oversize pistons good valve springs etc. I want some damned horse power any suggestions? I thought of decompressing it and rednecking a turbo on there but I also want it somewhat driveable and to get a couple thousand miles out of it before I blow holes through my new pistons. Anyway any help or suggestions where to look would be appreciated, Thanks guys

 

http://www.supersixmotorsports.com/