a lot of people have been telling me that the fj20 engine is a lot stronger and better than the ca18 and the sr20. at the summernats i saw an fj20 punch out 460 horses on the dyno with no internal mods just turbocharged and intercooled. how hard is it to drop these little power plants into the 1200 ute. does it require much modification to the firewall or the engine bay