Hi ye would agree with the quaility not the greatest but the car seems to go round the track well as for upgrades i would recommed the chassis strenghtener things i've only run mine for 2 meetings and the chassis was bent quite badly so i've bought the braces to try and stop this problem (not run it yet). TBH though i think they should come with the conversion kit in the first place
As for other upgrades abit of brass wieght in the front and thats all i've got in mine
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