Hi Jim,
Sorry I haven’t gotten back to you. I am a new father with an 8 day old son, which is amazing, so I’m pulling triple duty between home and work. I think your best option is going to be our 1776 project streetwise engine and a stock transmission. For your use, there is no need to waste money on a monster engine. The project streetwise will give you a little more than 100hp with the dual weber 40 IDF carbs. To get yourself better low end and throttle response, I can put in a different cam and 1.25 to 1 ratio rockers. As for the trans, we can build one with the 4.12 ring and pinion. This is what I used on mine and it gives great get up and go from 0-60. Here are the links to our website on these items.
http://www.mofoco.com/item/