XRAY - Model racing cars

Hello all,
I recently over the last year have gotten back into the hobby after a 9 year break. I raced on road from 97-05 and then a few short months of racing off road. This last year began racing off road again. Anyway my local track has installed an indoor carpet touring track. I picked up a T1 FK04 (I believe) from someone rather cheap to get started back in the on road game.
This being my first Xray touring car, I have a lot of questions I was hoping someone can assist. First of them is what newer model cars have parts that will interchange with the one I bought? Second, can someone provide the roll out ratio for this chassi?

I thank you in advance for any info you can provide!!!
Thanks!


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To my pleasant surprise the quality was similar to TAMIYA with only drawback the shock absorbers, which as you may notice I had changed them to the very popular TAMIYA shocks.

I'd like to take it too, give me some advice.