JDM Engineering is offering Long tube headers, custom chip and pulley packages to raise output to more than 500 RWHP Bassani Xhaust: replacing the exhaust with Bassani Xpipes and after-cat gives the cobra 35 RWHP. Bassani is also offering headers that will work with the same xpipe giving the cobra an extra 20 RWHP Replacing the stock pulley with Eaton pulley(from the Lighting) can give the cobra as much as 60 RWHP. Overall you can see as much as 120 RWHP gains from replacing the pulley, exhaust, aftercat, and airfilter. The potential of the cobra is so great that the NMRA has banned the car from its factory stock class. It would completely obliterate the field of high-11 and low-12 second cars.