forsakenfew It depends on what you are looking for with the 59-60 years. A lot of parts interchange up through 64. Items such as body & interior parts (heater included) cam be a Bit*h to find. I have seen some heater control valves on E-rape. They went for high dollar. You might post an add on this board and other Pontiac sites for one. Good luck. I have a used one as a back up for my 60 Venturas. I assume you know the valves are inside the heater box. You may be able to by pass it with some country engineering!
Outlaw Pontiac Racers Association"For Those Who Live The Legend"
Do it now fool! Life is short.
60 Ventura 4300# 12.38 @ 108.10 / 1.66 60'
__________________
ECM member.
2008 Outlaw Pontiac Drag Series Champion
MANDRA
Do it now fool! Life is short.
69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far..

through mufflers. 1.26 60'.
Going back to track with pump gas engine....
My 60 Ventura retired to street/strip duty..