SBP Expansion Chamber Question

Has anyone ever put an sbp expansion chamber on a schwinn delmar before. If so was it hard to mount, did it fit and was there any mods to have to mount it?

Is that in the way when you pedal? And also is it a big power difference and is it loud?

I think I'll want my pipe coming out the bottom so I might look at the wider cranks option. Before I get this pipe though I'm getting the cns carb off zoombicycles. I wonder what the power output and difference it will be with those upgrades. Plus i'm even doing some small upgrades like spark plug, spark plug wire and a billet intake from pirate cycles. Can't wait!