An open question to the collective knowledge of this group on the subject of exhaust systems.

Has anyone installed an exhaust with a manifold box like the original N/A 13B ? 

In other words, what about building a box collector of similar dimensions to the original heavy cast iron unit on the N/A 13B but made out of say .120 thou SS ?

Would this help dampen the exhaust pulses ? Or are we just opening a whole new can of worms by going down that track?

I think it would leave some HP on the table but for someone like myself not seekeing any more than about 160 hp out of my application is it reasonable?

Michael in Maine

Falconar F12 at glacial pace.