New to standing mile stuff but after going to the 1st 3 ohio races,im hooked.After the april meet i came home and sold my drag car,bought a c4 corvette with a 427 sb and a 6-speed.Got a rule book but i see the c5 and up corvettes are allowed to run a harness bar up to 150 mph.The c4 shares the same style high strength steel factory halo bar as the c5.I did not see any c4 cars to ask,only one i seen had a full cage.I found both chassis pics on-line,so could i use a harness bar or will i need a 4pt bar? If this is not the right place to ask,sorry. i will join esta for next year,i wont have safety stuff done by sept. Thanks,Dennis