Demon Seed. That is the look I am going for with the Aluminum lines. I went ahead and talked to Don at FBO today and I'm going with his carter hi-flow pump that has the cast housing ported and inlet/outlets ported to 3/8 NPT instead of the stock 1/4 NPT. He has never had one returned for warranty and has never blown the diaphram. His bench test flow rates for most units average 112 gmh and max 118 gmh.
The 1/4 NPT fitting on those pumps is total crap. Thats why they have a 50% fail rate and don't really flow at 120 like the advertising say. The originally carter pumps were 3/8 but people were cracking the housing by over tightening the inlet/outlet fittings. So carter decided to change to 1/4 npt to reduce the chance of over torque. Going from 3/8 to 1/4 increased the pressure and demand on the diaphram and the pump therefore fail more often. Same goes for the Holley pumps. Got this skinny from Don at FBO.
DemonSeed talk to Don at FBO and maybe he can port your pump and you may not need the regulator. Although it may be nice to have anyways.