Here is a recent post about a conversion,

https://www.tamparacing.com/forums/s...hreadid=179082


As far as I know, the truck lower is a box style runner. I am pretty sure that Eldebrock has a same style of runner on the RPM Performer, but I am not positive.


Here's a link....

http://www.mustang50magazine.com/techarticles/18818/