you can put an srt4 motor in it, but will have to cut the hood unless you find an intake manifold that'll fit.

however. you can use a 2.4 stratus block with srt4 internals, downpipe, and i think you can use the srt wat pump(?). and continue to use your 420 head and boost that. there's a guy (code4) that has that done and it's sounds nice as hell IMO. if he reads this he may chime in on it



and was that a stock 420 that held a 150? i haven't heard of a 420 running anything higher then a 100 long term without some work being done.