HI. I want to replace the original exhaust of my 250 and I don't a lot of noise in the cabin. Somebody told me that 260B exhaust from http://www.knisleywelding.com/index.php is ok, but i also have. The www.aviationperformanceproducts.com/dual-exhaus... . Wich one is better and why??????
Thanksssss!!! ,