OK, should be getting the Vortec soon. Going in a 79 MC w/305 now. Will have some questions along the way. This may have been covered already. I am going 350 trans for now. I know I need a 1 piece rear seal flywheel. What vehicle do I need to get it from? Car different than truck? I know it is 1986 and up i need to look for, just not sure on vehicle.