3.55 SG Wanted

Well here is how it goes. My dad has a 3.91 in his car and he wants to go with a higher gear. He wants a 3.55. His is a 71 Road runner with a 340 Auto. My car is a 318 Demon with a 4speed and I want a set of 3.91's. My dad wont give me the gears unless I find him a aset of 3.55's to replace them so that is why I am looking for them for a decent price.


Jeff