XRAY - Model racing cars

I'm a noob still, so I apologize for a stupid question. As far as bearing kits go, are they all the same or do I need to find one for my exact model? I know there are differences in the cars as a whole, but I assume some parts are the same. But when I look for bearing kits, acer specifically, it has different part numbers for each kit.

I have an xray t3 2012 eu rubber spec.

Pictures below:
http://s1279.photobucket.com/albums/y528/bloveless87
(sorry it's a little dirty due to lack of cleaning after last drive and don't mind that bundle of wires there )

In short, I need bearings, what's the difference between the bearings the different models use (if that makes any sense)? And will a t2 bearing kit work with a t3? What about foam spec bearings on a eu or us rubber spec, what differences would I notice?

Thanks!

-Bryan


edit: in case it's relative...
- 17.5t trinity duo
- justock esc (hobbywing)
- spektrum a6020 servo
- will be racing outdoors (picture of one of the tracks above with other photos)

If bearings are the same by size, they are the same, regardless if they are from a T2 or T3, or rubber or foam

I don't think there are any differences in bearings between T3 rubber and foam spec. The differences were stiffer springs, thicker chassis and harder plastics on the foam spec car, no differences in drivetrain etc. Anyway, just buy the one for your car- T3 2012 (no foam and rubber difference), and if you bought the ones for T3- they will also be okay

The bearings in foam and EU spec cars are the same. T2 and T3 kits have only some minor differences in bearing kits.

The Foam kits had front and rear ball diffs that each used a small bearing on the interior of the diff..

The rubber kits only had a diff in the rear.

T3'12 and newer had gear diffs instead of ball diffs eliminating the need for the small bearing...