redid mine last year. r3 block, 4.185 bore, 4" stroke. 11-1 comp, pump gas, w9's by ryan- 272 intake runner, intake-0.359.6@0.700, exhaust-0.255.5@0.700, m1 intake, prosystems 1050 dom. buzz it at 6000. mostly street driven. see's the strip about 4 times a summer. best et-9.61@137.91. i haven't had any problems with this power plant. turn key, warmup alittle & drive anywhere. stay safe, seeya.