I use a mopar performance aluminum water pump housing on mine...no problems. I have the drop-in style Meziere electric water pump, a big 3.125" core Griffin radiator, and the electric fan and shroud setup from a '03 Viper. Works great.

hemi 4.jpeg
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax