i need to get casting 783 9999 pumps to modify for race use ( like the Sweet pumps ) but I dont know what make or year they were used. Any of that type pump is ok if the inlet hole ID is around .600 so a 3/8 pipe thread can be done

Try looking at diesel and big block pumps late 70's to early 80's. Many of them had remote reserviors, not sure of the pump number, but its a start.

chevy vans

the vans have a lot of goodies for the blazers and trucks

tilting columns

pumps with remote reservoirs

hydroboosts

14FF wide axles

taller longer fluid level tubes and sticks


alternators with really high outputs

etc