Prothane Spring and Shackle Bushing Kit - Ford Fullsize Truck 1966-72 302-437 Ultra XP carbs are 38%

Ultra XP carbs are 38% lighter than our original HP

They're the same high quality gaskets that we supply with our intakes

2006-2009 GMC Yukon XL 1500

These limits are adjustable with MSDs plug-in modules

Prothane Spring and Shackle Bushing Kit - Ford Fullsize Truck 1966-72 302-437 Ultra XP carbs are 38%In leaf spring type suspensions there are significant forces focused on the pivot points and shackles. For this reason, it is imperative to replace the soft, blown out OEM rubber bushings with Prothane premium grade polyurethane components. All related sleeves, etc.. are precision fabricated to assure a perfect fit. Product Description: Spring and Shackle Bushing Polyurethane Steel Black Cadmium Plated Ford Fullsize Truck 1966 72 Prothane was founded