Steve,
RodKnock, Jamo and the others certainly know their Krikhams and have some really good ideas … the 4" 427 chassis with the 289 body sounds like a great combination and it seems like you are leaning in that direction already. In a way, it's the best of both worlds.
Rodney is right, choosing a color is a challenge ( at least it was for me
) but that's part of the fun. Then you will need to decide grill or no grill, bumpers, luggage rack, mirrors … so forth and so on
!
Look forward to seeing how it all turns out, it sounds cool already !