how do i get 5 lug tenzo rims to fit on it?!!

you can buy adapters.

Yes, that's the only way this will happen.

Depends on what lug pattern is on your Cav.. if its 5x100 then you probably out of luck. If its a 5x114 then you can do a conversion and it might work, but you also have to look at offset. If the Cav's offset is way off from the xB, then your wheels might sit way too far in or way too far out.

Spacers with bolt pattern adapters will be the easiest way. Your Cavi should be 5x100 and the xB is 4x100, depending on the offset of the wheels, you will probably need to get the thinnest adapters that you can find, usually 1 inch think. You would probably be better off selling those wheels and getting a 4x100 set.

yea that would be the safest way to do it. and not to be a dick head but i guess im going to be anyway, tenzo r rims are kinda cheap and heavy kind like a american racing or a flick. Go big or go home, get something nice for yourself like OZ Racing, Enkei, Konig these are a step above those tenzo rs. or if you really looking to get looks buy some Rays, BBS, Volk, Works or Buddy Club.