[BCompy]

I know this topic has been run around the block more than our cars but just one more spin, if it's ok. I finally got my mufflers from Arizona exhaust and one of the header guru's here in Ny has stated my little 302 is going to suffer from a lack of back pressure. I have the 36 inch mufflers with an inside dia. of 3 inch straight thru. The motor is a stock 225hp 302 with giggle juice , dual plane manifold , underdrive pullys and 355 gears,with overweight driver on the scales , 2450 lbs.
Any advice is appreciated I havn't gone thru the expense of putting them on yet. Once ceramic coated the deal is done. Am I making a rookie mistake. I know louder doesn't mean faster.