Saw this gorgeous Z1. It had a pipe, velocity stacks and a pipe, and a very slick dual front disc conversion, keeping the wire wheels. He motored by shortly after I took this picture, and it sounded very nice. Not loud at all, just mellow.
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.