The rear is an 8 3/4 with 391 gears and 275/60/15 tires. Super stock springs. However, I just added caltracs last week. The front is slant six torsion bars with the 73 to 76 disc conversion. However, I am now switching the disc brakes over to Wilwood to help reduce some weight and reciprocating weight. Rear brakes are drum. All four corners are double adjustable Viking shocks.