I'm building my 32 roadster to be a version of what you would have found on a dragstrip in '58 or '59. I may make some passes on the dragstrip with about 400 HP, so it has to be strong and needs to have a good selection of gear ratios. I have a PU banjo rear with open drive, a "too late model to be correct" 9", an early Olds (50-56), an 8 3/4 mopar with a 489 case. The PU rear looks correct, but won't have enough strength, even with little 7" slicks. The olds looks right, too, but parts are either non-existent or expensive, and strength is questionable, too. the 57 and later olds would be nice, but I don't have one and they are pretty pricey. The 9" meets the requirements, but is not an early round back. I also question whether there where many of these under rods and racers by '59. So.... my question is, what else is correct for the era, available, strong, and, ideally, cheap? 55-59 chevy? other ford or mopars? Thanks for the help!