Fits 1965-1990 Chevrolet 396-454 Big Block. Round Ports, 1.92 Inch " GM Notes: Does Not Fit 1968-1980

Notes: Does Not Fit 1968-1980 GM TH350 (non-Lock-up) transmissions

This awesome upgrade features a front mini leaf spring lift

Includes two BDS85651

iDash displays DPF regen status

Fits 1965-1990 Chevrolet 396-454 Big Block. Round Ports, 1.92 Inch " GM Notes: Does Not Fit 1968-1980Mr. Gasket's Performance Header Gaskets are manufactured from a heavy duty high temperature material, . 062 inch thick, consisting of an acrylic binder system to resist high temperature. Provides excellent sealing and durability with maximum torque retention to eliminate gasket failure. While precision die cut for an excellent fit, it can be trimmed if necessary for modified port applications. For OE replacement, higher performance street, drag race