This is a bit more expensive but a Heavy Duty pump for the same 283, 327, 350 requirement for the SB Chev V8... its a GM Brand New Water pump - heavy duty..... for the Chevy SB from 1955 on...including for any multiple belt need... with accessories on it like AC or driving two or three belts.
.jpg "Seat Foam: Olds Cutlass 68-70 Front Buckets (Pr)")
.jpg "Door Hinge: 70-81F Lower (repro) Each")