Which 8 3/4” SBP Drums and Hardware

My original '70 Swinger still has the LHT studs on the driver's side. I'm in the tire shop to yell in their ears to make sure they get it right(left). It usually takes a question from the gray-haired ponytailed guy before they try it.
I don't think '72 had LHT. I've read 1970 was the last year.

edit: I guess depending on the year of the rear axle, It may have LHT. I'll take a look this weekend.