Thanks for the ideas and replies so far.
I'm thinking about going to the hardware store and getting a rod that is threaded on both ends and two female-thread heim joints for each end to go into the throttle arm as seen on this page:
https://fordmuscle.com/archives/2004/08/ThrottleLinkage/index.phpIt's just the part that attaches to the throttle arms that I don't like on the Summit kit. So I think if I can take the idea from above and use it with the rest of the Summit kit (the part of the "T" that goes down) that might work.
