1st to 2nd @ 20mph, 2nd to 3rd @ 54mph Lokar help needed!

Are you kidding?! you just put a different spring in there and see what happens. If it ain't right, you do it again, and again and agaaain.........................................and agggggaaaain.lol

Now who would go through all that to get it just so? :D
Oh yea, me. LOL