QA1 Mustang II Coil-Over Spring - 2.5/3.5 x 8 600# Transmission Cooler Fittings MSD has provided the components

MSD has provided the components to fire nearly anything in motorsports

They are designed for 1962-79 389

NOTE: Image is for reference only and shows model TF193

swirl polished heads and friction-welded tips

1 in Shank

QA1 Mustang II Coil-Over Spring - 2.5/3.5 x 8 600# Transmission Cooler Fittings MSD has provided the componentsQA1'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.