Posible swap for my 273 Barracuda 1966

what is the dollar budget?

low price to high
first option probably $3000
highest options probably $20,000

stock 360
high performance 360
stroker kit high performance 360
special mounting kframe + stock big block 383 - 400 or 440
special mounting kframe + high performance big block
special mounting kframe + high performance stroker big block
special mounting kframe + 426 hemi
special mounting kframe + 572 stroker hemi

here is a thread about the special kframe made by a member of this forum:
http://www.forabodiesonly.com/mopar/showthread.php?t=135839