RC10T4 difference from RC10T6

[Nero45]

I've got a T4 that I built a long time ago and I've thought about breaking out again and using however RC world has changed in a big way. Now tires use the setup that Traxxas was using, brush less has taken over, and we don't have to have crystals anymore. All these things were either just being talked about or where so new that it would break the bank to buy. So that brings me back to my T4. I've still got the old setup of tires and electronics. The tires I'll have to replace due to age which isn't a problem but rims maybe an issue and the electronics are way out dated but I could still use the receiver and remote I would just have to buy more crystals but new motor and speed control are in order. However what about parts that break such as arms and shock towers, where do I get them? I guess what I'm asking is do I go through to make working again for something that I may not be able to fix later or just get a newer one and are parts backwards compatible?

[clintf]

I bought a T4 last year and have replaced the electronics with a brushless system for running at the local outdoor track. I've had no issues so far sourcing parts from amainhobbies (search for "associated t4") or eBay. I'm pretty sure amain has the wheels for the stock T4 (drive pin rears and bearing fronts) available. I updated my T4 to use hex wheels. I would suspect that few if any parts are backwards compatible from the T6 (or T5).