I have a chance to get myself a set of mint Voxx 17 x 9 rims for cheap but they have 5x120 so I'd have to get an adapter which they seem to be 1.25 inches thick, the tire size on them are 235/45/17.

 

..and I want a pony but it is brown..
Question?...(Just ribbin ya,..ask a question..).
...
Ok I am gonna guess here since you are not really asking anything.
You need to look at the Offset of the wheels and determine if they will fit that way..and of course you will need adapters as the Rx7 5 bolt wheel pattern is 5x114.3 mm.
The thickness of that adapter is what would determine your total offset and the fitment to prevent rubbing when the wheels are placed on the car.

 

seller says -40 all around not sure what that would make it with 1.25 inch adapter or 1 inch

 

Funny thing about cheap "non-fitting"wheels though is that you may end up spending as much to make them fit as you would of you actually bought a set that fit.
.ever thought of Mustang wheels?

 

I haven't until now I found a set of rims I'm thinking about

 

He mant to say +40 I am pretty sure.

 

Found a nice set of 18x8.5s 114.3x5 ASA ST3 5 spokes I'm picking up should look pretty good