you can check out these guys and ask them about theirs, you might
be surprise who the supply
http://www.catpep.com/
I put a bbc block together for a friend and used their lt. wt. h-beam
rods and asked them for a stretch number for their bolts and he
told me "The torque is 65 ft-lbs and stretch is 5-7/1000". Thanks for
your question, we sold these rods over 20 years, we supplied to EAGLE, SCAT, LUNATI, and TOMEI before"
just another conection :wink: good luck