89 RS LO-3,5spd,4.56 gears 7.5" rear end..
is his setup right now.

he has A built 427 TBI .
10.6:1, 298*dur 655lift cam,indy race head's,900cfm 4bbl holley TBI.

Stage 3 clutch,m-22 4spd .
moser9" rearend with 4.56 gear's.

Dude want's to drop this in his 89 RS.

I got my doubt's about it fitting ???

So he want's to know will it fit???

What mod's ay have to be Done?

any help you can give i'll pass along to him...