Eibach XT Barrel 2.500 in ID 10.000 in Length Coil-Over Spring - 225 lb/in Spring Rate - Red 23012BK The intake bolt pattern utilizes

The intake bolt pattern utilizes the 1986-91 (straight) 90 ° angle on all bolts

7/16" base thread diameter and 1

Detroit Truetrac Differential

Just as importantly

8 AN / 10 AN Inlets

Eibach XT Barrel 2.500 in ID 10.000 in Length Coil-Over Spring - 225 lb/in Spring Rate - Red 23012BK The intake bolt pattern utilizesEibachs XT Barrel coil springs are designed for the special needs of Circle Track racing, and are configured to provide additional clearance for standard 2. 5 inch circle track racing shocks. Highest Linearity and Guaranteed Consistency Ultra Lightweight for Reduced Unsprung Mass Each Spring Individually Tested Maximum Travel in Combination with Smallest Block HeightsEibach has been committed to creating the finest race springs in the world for over