I am beginning to get the parts up to build my 6" rod 383 and wondered if any one could answer this question. I am buying the scat rods but am not sure if the Q-lite rods are worth the extra $100+ dollars over the 7/16 I-Beam rods. I want the engine to rev quickly but am not sure if there is enough weight difference betwwen these rods to contribute to this. The reset of the setup is the scat forged crank and srp pistons.