Spafco Chassis 1 3/4" x 1 7/8" x 3 1/2" Stainless Steel Headers 1 3/4" x 1 7/8" x 3 1/2" Stainless Steel Long Tube Headers Fits 18* Small Block Chevy Heads w/ Stock Bolt Pattern 36" Long Primaries w/ slip on collectors Due to the custom nature of this product they are NOT returnable / refundable CHECK TRACK RULES FOR PART LEGALITY