Hi. In post # 16 you mention that magnum 360 are long blocks and will you have to modify your driveshaft. The term "long block " refers to how complete the engine is. A long block includes the block, heads and sometimes the intake manifold. A "short block" is the block,crank,rods and pistons so everything below the heads. The blocks are all the same length so no modification is necessary to you driveshaft. Hope this helps you out and good luck. Bobby
