Split exhaustmanifold on e-bag

:http://www.dutra.org/doug/doug-sl6-exhaust/dual-duals/dual-duals.htm

Thanks for this great info, I looked and read the dutra article and if it is this tight for a 225/6 just think how close it would be for a 170/!!
A 170/ is almost 1" shoerter block and would be way to close for my 170/.
I agree with grupuscreature that the rear modified stock manifold would be a tater in the rear 456 exhaust chambers.:sad11::sad11::sad11:

Thanks for all the info 8)