REPLACES STOCK, OEM-STYLE SOFT RUBBER MOUNT TO ELIMINATE LINKAGE BINDING, DRIVELINE MISALIGNMENT, & UNWANTED TRANSMISSION MOVEMENT IN RACING & STREET PERFORMANCE APPLICATIONSTHIS STURDY MOUNT IS CONSTRUCTED FROM 3/16" STEEL & FEATURES SLOTTED HOLES ON TOP FOR TRANSMISSION MOUNTING & THREADED NUTS WELDED TO THE BOTTOM FOR CROSSMEMBER MOUNTINGFOR USE ON 1958-88 CHEVY, EXCEPT 1982-92 CAMARO & FIREBIRDFITS POWERGLIDE, TH-350, TH-400, & ALL BORG-WARNER, MUNCIE, SAGINAW, CHRYSLER 4-SPEED, & DOUG NASH 5-SPEED TRANSMISSIONSNOTE: SOLID TRANSMISSION MOUNTS MUST BE USED IN CONJUNCTION WITH SOLID MOTOR MOUNTS (#400-7003 & #400-7008) TO PREVENT BREAKAGE OF ENGINE BLOCK & TRANSMISSION CASE DUE TO TORSIONAL STRESS