I'm running 2, in a 63 Cat, 389 and 66 GP 421, both installed for 10+ years. No issues and I drive my cars a decent amount of miles. Finger's crossed but I feel comfortable.
1963 Catalina Safari
1966 Grand Prix
1992 Grand Prix Petty Edition
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'63 Catalina Safari, Silverleaf Green / Cameo Ivory, nice options, 4 speed
'66 Grand Prix, Marina Turquoise, 421 HO, many options, 4 speed
My Garage
Tarheel Tigers Pontiac Club of Raleigh, NC
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