The hubs with different bolt patters are a Sportsman style hub for late models or Mods. Funny you bring up the PTP website Ive known Chris for 10 years. NASCAR Limits the amout of camber you can have in the rear end at 2 degrees.... Sure you might find cheated up ones that have more but you can be safe and saying there around 2... A superspeedway (old restrictor plate)Housing will have close to no camber and no toe... because its not about handling its about not losing HP.. Older Truck housings which have widths will have little camber as well...Stay away from Tex Housings the tubes and snouts are one piece not welded on..I wouldnt waste my time with an old stockcar housing... I'd start with a fresh one by the time you re-tube..re snout it your still left with a warn out center... the gasket faces leak.... the studs are barely staying in place beacuse of the countless gear changes.....