[Double Venom]

Robert,
A lot of questions here. First are you going to be using a 3 point harness? (Not legal by NHRA standards any more.) Or a 4-point H harness? Does your frame have nuts welded into the frame on the inside behind where the seats go? Does the rear frame cropssmember have a tab on each side for the "Y" belts to bolt too? (If so this has to be changed if you do go with a 4-point H harness.

Simpson, M&R (Great belts.) Jegs, Summitt both have multiple types that come with the correct installation kits. This is a critical safety point so ask all the questions you want. I'll try and help!
DV

PS. Do NOT bolt any seat belt through the fiberglass and just use any size washer behind them like a lot of company's do. Extremely unsafe AND illegal! All belts have to be bolted into the frame to be legal.