SouthbankSkyline

Hi all, First time poster, long time reader. Just gotten myself a R34 25GT, which has a cat back exhaust, but unfortunately it's got quite a noisy drone that makes long highway driving a lttle unpleasant. I've been reading up on the forum and have decided I probably need a central muffer installed. My question is - any recommendations for exhaust / muffler shops in Melbourne? I'm in Southbank, but happy to go anywhere! thanks in advance Rob.