Originally Posted by Madro413
I think I'm just going to trade and see if i can get a 4x10 cab that will fit my car.
If it comes to this, consider instead just replacing the 1x15 with a second matching 2x10. You can probably get the two smaller cabs into your car more easily than a 4x10 cab, and there are also advantages to stacking a pair of 2x10's on end to create a tall linear array.
(Definitely try schecter5string's suggestion first, though!)