Why not set the /6 up to run on E85? If E85 is available in you area it will probably be cheaper to run and build than a diesel. If you can find a salvage diesel, you could run it on vegetable oil and really save money.

Ryan "Bigs" '73 Duster (BLKDUST) - Black, 100% factory sheet metal, flat hood, 346 cid, J Heads, and a bench seat. http://s268.photobucket.com/albums/jj1/bigsbigelow/ Best to date: 12.40 @ 109 mph