hello folk's haven't been onin a while but any who, im putting a few part's on my motor an am wondering is a 90 harmonic the same as a 74?? I know 74 had he steal crank's an the newer 1's had the cast but I just cant remember.. I go the 1 I pulled of the 74.. think... but the 90 harmonic balancer is in great shape compared to the 74.. any info would be great guy's