Uh....if you have a NNBS, then you should have the 243/799 heads. KEEP THEM!

If you have considered a stall, then why not a proven OTS cam? Like the TR220--which you truck would LOOOOOVE? And if you are doing a 3200 stall--go for the TR224R. Even betta!

If you do an external cooler--then do a 40K...an have that be the only cooler the fluid goes to...

And no real 6l60e/6l80e shift kits yet...to my knowledge.