I thought it was quite old??! Anyway, if it is a recent design, then I'm sure you could drop a .15 in there, no problem. That guy on your other thread reckons the hyper .21 drops right in, but I'm sure you would need major drivetrain upgrades to do that. I may be wrong though. To be honest I'm gonna butt out now, and let someone who knows take over. I don't want to give you bad advice, and to be honest, I don't know anything about this buggy (I even thought the pirate was a stadium truck! LOL!). I stand by what I've said so far though...

I didn't race in england, but I went to a track in tolworth once where there used to be a racal decca, but I can't remember ANYTHING about it (I used to smoke quite a bit back then, if you know what I mean! lol!) [8D]