Dropping the rear of my 64, what to use.

Hey Dodgenut64 thats a nice yellow convert in your post (lol,just kidding its mine)......just thought I'd let ya know my car has 1" spacers to drop it down where it is,and the springs have pretty good arch in them,they would be six leafs.Wheels as you can probably tell are 14"s. Lots of people tell me I need new leafs.....cars is sagging in the back....I have to tell them no it was built to look like this,and the car sits level. Not sure how much but the front torsion suspension has been dialed down to match. I may take the spacers out at some point just to see if I like the looks without. Downside to it being so low is dam speed bumps....my pipes are pretty bashed up,some nasty speed bumps around my area!! Do you know are the six leaf springs stock on converts or is five stock??