Have a question for those guys running the NV4500. Do you really use OD enough to justify the cost? I've got a new toy ('72 CJ-5) and I REALLY want an "ENVY"4500 to put behind the 377 Chevy I'm putting in it. The trouble is that I have 2 T-18's sitting around already. Help me out guys! I need a way to justify to myself the additional cost and extra length of the NV.