Don if you do decide to go with a 390-428 build check out Keith Craft's prices on stroker kits. He been posting some really good prices ($1495) on his stroker assys in the classifieds at www.fordfe.com Also keep an eye there for a block or good core engine. I agree with the guys on the stock exhaust manifolds. Might be worth it to cut back the shock towers to get some good headers in there. 460 is a nice option too and bang for buck you'll get more than a FE. Lots of good choices. Prices are pretty reasonable and coming down a bit overall. Looks like a fun project too!!!

Good luck,

Glenn.