P-
I might as well admit defeat on the 240/4.9L swap on this one; I can see it turning in to (yet another) huge money black hole.
If I can buy the truck cheep, simply regearing to a 3.07 (from my '91), a cat-back exhaust, and lightening the poor thing as much as possible whilst retaining the OEM 300 seems the only way forward possible. (Sniff-snivel-whine-moan

).
Thanks for your help!
eddiE
(PS-You do psycho evaluation in yer "spare" time?)