Some were and some weren't....Even IF it has a pilot hole, some were drilled an incorrect size and take a special "Conversion" bushing to work, but that's not your biggest problem....Finding an external balnce 360, NON_MAGNUM flywheel is the biggest hurdle, as Chrysler has discontinued them. It's a swap meet for a used one at best...The 318-340 will bolt up, but are INTERNALLY balanced and won't work...Then, there's the "Truck" 11" flywheel that won't fit inside the "Car" 10 1/2" bellhousing......Better off finding a 318 and building it IMO.......