Whitelines

Hi all, brand new member and first ever forum thing I've attempted. Just bought a BT1100, all nice and tidy but I want short undertray and tail etc along with a single side exhaust. I'd like to think there are companies making this kind of thing as general production pieces as I have seen many photos on the internet of the look I want but I'm buggered if I can make any headway. If anyone could steer me in the right direction it would be very much appreciated. I'm not lazy just lacking a little knowledge. Thanks