@Thomst.....It is a F103 chassis.
Yes you can use this
http://www.tamiyausa.com/product/ite...oduct-id=51346 parts for the trust bearing.
No you can not drive a 11.1V lipo.
You need a 2S 7.4V lipo either stick size or a shorty
The dif is no problem as you can use the complete rear axle of the F104Pro or the F104W(last is the same as a F103)
If running foams, use 30SH rear and 40SH front.
I use GP-speed tires.
If you need to run rubber, then go for pitsu mitzu.
Those are from what i have found out one of the best.
Wheel you can use of for example from Ride or any other wheel that fit's the F103(same wide) and is used for rubber tires.
Hope this helps.
regards Roy