i have a couple of v8 conversions and went mostly with renegade kits stuff...i do use the mezziere 55 gph electric pump and i had my own radiator built locally at griffin. i tried to be as simplistic with my conversions and never considered going with multiple radiators. i used as large a radiator as space in front would allow and exhaust it beneath the car. i have never noticed any problems with the air going beneath the car...short of nascar speeds! so to me it is not a problem at the speeds that i run and i do not do track events! i get my cabin heat from the radiator shroud with hot air ducted to the interor.
