In the Mobile area, I'm pretty sure that BPO455/THM400 goes for about $1000-$1200 if you can hear it run. I regularly find 350s for $300-$400 running and the same for an OD trans, of course you are taking a risk on used parts.
I highly recommend the Chevy crate motor for $1300 and the Chevy Crate TH350 for $700. But I understand money doesn't grow on trees and I am very frugal often chasing used parts.
I still think finding a donor olds 98, buick roadmaster or cadillace fleetwood with a running V8engine and T2004r is the way to go for you, it will bolt in except for needing a longer driveshaft.
If you want this 307/2004r out of this wagon, you can have it if you want to drive to Foley, Alabama.
Chris
