Gentlemen,
Sorry I missed so much of this conversation. While at the Monterey Historics this past August, I took some engine pictures at the Shelby booth. The Aluminum BB with air-to-water intercooled supercharger(s) was selling for around $30K and produced lots of HP. Depending upon the setup, obtainable HP was between 800 and 1500...at the fly wheel no doubt!
I've also taken some pictures at the Shelby Factory in Southern Calif. There were pallets of Al BB's there ready for building. I'll look around for the pictures of them. I think the labels had "Buddy Bar castings" on them, but don't trust my memory, I sure don't.
Anyway, I've also driven a friends Al BB that is naturally aspirated. It put out near 600 smooth HP and made my heart skip! Here's the Shelby Engine block website address. Notice the reference to over 1500 HP!
http://www.carrollshelbyent.com/engi...inum_block.cfm
All the best,
Randy Klein