Super Jet 61x barrels bored to 760, do i need my b pipe manifold matching?

[1eyedjim]

as above really, i have got a set of 61x barrels ported and bored to 760 and a nice shiney new b pipe, do i need the manifold matched to the ports on my barrels?
Cheers
Jim

 

[agua]

Im no expert
But i think it would probably help if there not matched allready

 

[Matt_E]

Porting typically doesn't touch the shape of the exit site of the exhaust ports.