OK I traded a guy on CL my American Racing 20's for a set of 15x6/15x8 Weld Prostars. Both the x6's and x8's are zero offset having a 3.5 inch BS and 4.5 BS respectively

I have to pick up some shank lugs and I really don't like the open ended lugs due to water and debis getting in there on top of thinking they are ugly.

The closed end lugs is a 7/16 RH thread with a 1.380 shank. Will this bottom out on my 85 Delta 88's hubs?

 

Probably not. I would drop by a local tire shop and see if they have any laying around or purchase a set of 5 and test fit. Those wheels will look awesome on there.