B&B has made these shorty headers in a 'step' design. 1 5/8 " at the flange that step up to 1 3/4" with two cylinders merging into a 2 1/4" collector then the two 2 1/4" collectors merging into a single 21/2" collector. In plain words, a step TRI-Y header or in even plainer language, a sprint car header for a ZO6.
B&B has also trimmed half of the weight of your stock manifolds for the Z06, 16 pounds on the short tube headers versus 32 pounds for the stock manifolds on the '01. 02's are with in a pound or two of that number.
No catalytic converter removel, pre-cat nor main cat, is necessary. No welding necessary Bolt on install time on the shy side of 3 hours can be expected, though our installers did it in 1 hour and 40 minutes. Some customers find it hard to return a leased vehicle or sell a emmissions changed car at the time of trade in. Not with these pipes.
All stainless steel construction, half the weight on the already weight conscious Z06 and a 8-10 rwhp gain is a combination most customers will prefer.
Retail is $1150, call us for the best deal on them, shipped free in the continental U.S. is the current price.