Proform Shaft Mount Rocker Arm - 1.65 Ratio - Full Roller - Purple - Big Block Buick HSXSM11SASM61 Adapter bolts to stock 5

Adapter bolts to stock 5 x 4-1/2" or 4-3/4" bolt circle hub or axle flanges when adapting to 5 x 5" bolt circle pattern wheels

Must be used with XP rear torsion arms

Reverse Gear

Our Stage II Ladder bar suspension kit is our most popular ladder bar kit for most applications where a narrowed factory frame or new sub frame is not planned

SportMax Lite Direct Lube

Proform Shaft Mount Rocker Arm - 1.65 Ratio - Full Roller - Purple - Big Block Buick HSXSM11SASM61 Adapter bolts to stock 5Product Description: Rocker Arm Shaft Mount 1. 65 Ratio Full Roller Aluminum Purple Anodized Big Block Buick PROFORM invites racers to experience the strength, innovation, and power behind the PROFORM brand. PROFORM Parts (Specialty Auto Parts U. S. A., Inc.) is a leader in the High Performance Automotive Aftermarket by engineering and manufacturing creative products from intelligent concepts. Our goal is to provide the performance enthusiast with