You have a clone, why stay with a 15" tire? There are better choices in 17" and 18" tire. They are also a more modern tire that drive better. Some things should be left in the past.Tires that I thought were good in the 80's I would think that they are bad now. As we went through this putting tires on the wife's Dakota R/T. We get use to the modern tire on DD. We upgrade the shocks and motor but put on a 70's technology tire and that makes no sense to me unless you are going for concourse show winner and trailer the car every where. Go to Tire Rack and look under there surveys under one of the summer tires category and see what is rated well.
Sorry if I came on a little strong, this is a pet peeve of mine.