inifinity speaker fail.

[fast_Orange]

So... my excellent quality inifinity 6x9s failed. I had a buddy with some extras that were in decent shape and went to stick them in... like trying to squeeze a watermelon in an apple hole. Then once in, realized my head unit is 2ohms and the speakers are 4ohms. Soooo... whats your suggestions on what speakers fits in the factory hole best and whats a decent 2ohm speaker that wont break the bank? Im having some decent trouble finding them.thanks