8.25" rear axle and disc brakes???

Ok..I don't understand the whole core thing. Aren't these units TSMs own design? If so where would I come up with cores?

This is a driver...Parking brake is mandatory (Yes, they actually check these things here in Texas)...They warned me the first time I got it inspected that it wasn't holding. They let me slide because they were rodders themselves and knew the car was a project in progress (the fully welded exhaust with Edelbrock mufflers tipped them off).