QA1 Mustang II Coil-Over Spring - 2.5/3.5 x 8 600# HAV733003 Peterson's Splined pulleys are made

Peterson's Splined pulleys are made to work with our popular spline drive setup

corrosion resistance and strength

Axle C-Clip

1986-1995 GMC C3500

Under the stainless steel terminals of the MSD cap and rotor is an easy-to-adjust mechanical advance assembly

QA1 Mustang II Coil-Over Spring - 2.5/3.5 x 8 600# HAV733003 Peterson's Splined pulleys are madeQA1's Mustang II Pro Coil Kits feature polished and chrome plated springs. They have a 3. 5" upper I. D. and 2. 5" lower I. D., these springs have an 8" free length and are offered in four rates. Made with the highest quality materials, QA1'springs are strong, consistent and have a long life. All QA1'springs come with a lifetime guarantee to remain within 2% of their original free height and rate, so you know you're getting quality springs with QA1.