What type of studs do I need?

What I would do is goto a decent auto parts store and have them look up the number for the replacement wheel stud for your car. With this number they can look in the back of the book and get the specs for it.With these specs you can either continue to look in the same book for a stud with the same dimensions other than overall length(looking for a longer one) or check summit or jegs for longer ones with the dimensions you got from the parts store. I worked in an autoparts store for years and it won't be hard for them to do. If they feel like it. I would stay away from autozones or advance autos. Even if you can find someone who knows what they are doing, they might not have the books that have that info in it. I doubt the computer has the specs in it,but I might be wrong. P.S. your car looks great with the draglites on it. I have a 1973 340 duster and will be buying them for my car. What are the offsets on the wheels?? Thanks and good luck Rich