Actually I found a site that had a pretty good deal on the 6.1. I have it stored some where, I just need to find it. Also Keisler offers a 6-speed trans for them. But I also ran across a stroker kit for a 340. I'm kinda on the wire as to what to do. It seems to change with the direction of the wind. I think the stroker motor advertised 500 ponies at the crank. But you have to use the aluminum heads they suggest and the cam. My brother works at a machine shop" Kannapolis Engine Shop "and they seem to do good work. I have a 3.0 twin cam and two 2.6 turbo motors we are in the process of having done now. But living in the heart of NASCAR country, with so many racing shops close by. We can find some good shops to help us out. Friend of a friend kind of thing. And a nice shop near Mooresville that sells obsolete and used racing parts. So the options are endless.