What spring rate do you recommend for 1969 mustang, 351W iron block, aluminum heads, lowered about an inch?
For a 1969 Mustang with a 351W Iron block with aluminum heads we would recommend 450 pound spring rate coil overs (Part # 6470COK-2A450) for a softer ride and and 550 pound spring rate coil overs (Part # 6470COK-2A550) for a firmer ride.
