I switched to Carter # P60430, about $54 online + s/h. I carry a matching spare . No fuel pressure regulator required and mounts on drivers side inner side frame rail ahead of the gas tank where my previous kaput holleys were located. My install was by Craig Aylsworth, SPF owner and Detroit area SPF installer who gets them at the only place he has found to buy it... The 5.5psi pump :
#3188
http://cbperformance.com/catalog.asp?ProductID=577
Bill