There was a guy who posted a few times here on CHR who was building a Speedstar, his handle was Ralph68... I have not seen him post here in a while... Have you thought about calling Rat's or Bobby Alloway to see what they use... I am sure someone at either place would be glad to tell you what they are using or even better call Hunter's, don't they sell most of the parts to Alloway?...

Here is a link to Hunter's web site...

http://www.hunterscustomauto.com/home.html

There tech number is... (615) 227-6584

Hope this helps...

Dave Brisco