I added a leaf in my 57 Studebaker (no new leaf set ups available) brought it up 1" +....I changed my Firebird springs from sagging 4 leafs to a set of new 4 leaf , should be the right ht for you , unless you expect to carry heavy loads, like 3 very heavy girls in the back seat! lol
might want to check the heights first , you could have too tall fronts too...
