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I have been looking at the rack & pinion systems. They all list different part numbers for the small block with or without the hypo motor. Does anyone know what the difference is ?
What year Corvette are you talking about? The differences in the high performance 327 that affect a R&P installation are the oil pan and the pulleys. The pulleys are only a consideration if the car doesn't have power steering and you want to add it. The correct pulleys need to be used and they are different between the normal and HiPo options. Otherwise there aren't any differences.