I know its simple but... I know the 78' uses and odd size and I want to order a new nice set, I see two sizes listed. I think it's the 1/2 am I correct? Thanks!
And in addition to all this, Good luck finding a nice set at a good price at your local parts store... Best I could find was $40+ at AAP and Napa only had plain open ended lugs. I got a nice set of 20 sharp chrome ones on ebay for $10! I'll have to post a picture up, I picked up a set of Ralley's that were in bad shape and refinished them and then added some new lugs. Made a world of a difference!