The Challenger does have a big block from the shots I saw of it.
5.6L? Probably a 383 or 400.
EDIT:Okay, now that I think about it a 400 is a 6.6L
so it's either a 361 or a 383 BB.
I wish I could send him a motor I have built up.
A forged steel crank 383 punched .040 over making it a 390.
It should make just over 400hp and turn 6500rpm all day without a problem.
GT = OG Wretch
INLBT
Cars built and tuned for the average FM2 driver with TCS, ABS on and wheel use.
If paint for sale is locked then it has been tuned.
OASN, if you have any problems driving one of my tunes
please contact me.