i'm planning on building my 4.0 Jeep motor by next winter. alot of people do V-8 swaps and such but i'm staying true to the old saying "dance with the one that brung ya". my Jeep is 190hp and runs really strong in the first place which is what is inspiring me to do the build. i've found tons of aftermarket parts such as cams, throttle bodys, injectors, aluminum cylender heads with roller rockers, computer chips, 6-2-1 headers, stroker kits ect. i've even found a company that builds compitition aluminum head long blocks in 4.5, 4.7 and 5.0 strokers. nitrous and superchargers are available too. any other Jeepers on the site?