Hi Scot, with an adequate wallet you should find several engines of interest in the PAW calalog. To partially respond to your dyno-software question, I have not bought any yet but I have studied in considerable detail Ryans SBC dyno page:

http://www.ryanscarpage.50megs.com/combos1.html

There are quite a few hardware combinations there. One limitation is that Ryan's list does not show the rpm curves. Comp Cams had a page with full H.P. and torque vs rpm which was very informative but it may have been removed. Edelbrock also has a site with a number of such curves for their products. The list by the Ryan site has a list of references at the end of their page and probably there are curves in the original papers. The comment above about low rpm torque being better for the street is in agreement with my views.

Don Shillady
Retired Scientist/teen rodder