Check post #126 on page 13 and post #133 on page 14. I think that should have all the info you are looking for. DSE headers which I believe are 1 7/8".
Thanks Greg.
Wow, 450 cubes!
715 hp @ 6600
610 ft lbs @ 5200
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2004 NASA AIX Mustang LS2 #14
1964 Lincoln Continental
2014 4 tap Keezer
But the thing that is bad ass is the flat torque curve and hp like a rheostat. This thing will be great to drive. That cam you posted is the key to this wide power band.