HP upgrade, leaf spring question?

So ive got a 72 road runner currently with a 318 in it. But im nearly done with getting most of my upgrades including my 440, 727, and dana 60. The engine has a .30 bore and a stroker kit with aluminum heads and intake and efi. the dana has 4.10 posi. My question is about the leaf springs. I know i need to get new ones, but what exactly should i buy?? Ive been looking at the super stocks, but i wanted to hear your guys' input.

This car will be a street car and im not sure of the vehicle weight yet with all the new upgrades, so i dont know what weight i need to specify when ordering my springs either. thanx

Author: phatdak18