I'm looking into either getting a world man 'o war,dart 302, r302, or the new boss 302 block for my 5.0. Does anyone know which of these blocks are machined to accept a roller setup without having to go with a shorter lobe center cam? I want to stick with a 8.2" deck heigth block and I'm compilating a parts list to assemble a bulletproof shortblock, but I'm having a hard time finding out what final machining is req'd for these block and which ones are roller friendly. Any help would be huge.