Jordan, In my opinion I'd lose any thought of ever using that turbo, your in over your head with that thing, trade it, sell it, do whatever it takes but move on my friend.
I'd definetly trade for the 427, it sounds like a great swap.
Stick a healty roller cam, somewhere in the mid 600 range, set of good flowing heads, victor jr intake and a 1050 dominator and you'll be pushing the 700Hp mark easy.
By the way, whatever happened to the 454 deal?
JMO> Cp