I have a 454 .030 over short block I am going to complete here shortly. Just looking to put together something that is a little more than the mild 396's that are in my 3 cars now. I bought the short block years back, its a 73 block with polished steel crank, stock rods, TRW 2349 pistons and it has been balanced. Camshaft is going to be the 502/502 HR, 224/234 and 527/544. Heads are going to be #049's that I did some quick clean up on the ports behind the valves and the short turn lip on the floor. Figure I will spin this motor 5500 max. My question is should I run 2.06/1.72 or have the 2.19/1.88 valves installed ? I have sets of stainless valves in each of the sizes already.