A 6 point roll bar is good until 9.99 or faster. 1 3/4 .134 MS EWS is fine. It needs to be welded directly to the frame or 6x6 plates. You can buy a basic prebent *kit* from S&W race cars for $189.00.

NHRA rule books have the drawings and tubing thickness's.

here i just found this:

http://www.nhraonline.com/contacts/tech_faq.html

Last edited by bigtimeauto; 01/02/11 10:21 PM.
BB, TT5,Procharged 3300lb Street Car 4.79/154