Package consists of everything you need to put a SBC in front of the early Ford/Mercury transmission (less the stock Chevy starter): The BH 307-EFM Bellhousing with pilot bearing and bolts plus the neutral balanced 168 tooth Chevrolet flywheel (Pre 86 2 piece rear main or 86 and up single piece rear main - must Specify) plus the 10.5" EFM clutch kit (with the 86 and earlier flywheel) or the 11" EFM clutch kit (with the 86 and later flywheel) plus clutch alignment tool and pressure plate bolts. $40 saving over buying parts individually.