chrobar

Alright, here it goes. Most* parts for the buggy are available for the truggy. Shock towers, knuckles, hubs, etc. are interchangeable. The only parts not interchangeable without modding is the radio tray, front support, arms, turnbuckles, outer diff gears, and CVDs. I think that covers about everything, add on if I forgot. Anyway, most kyosho parts are usable, I think, with the car/truck. I haven't tried much, so I'm not sure. I know that the front upper arms from the STR and kyo. buggy work well enough. One of the things you might want to do is either shove a rear hinge pin in the stock hollow upper arm turnbuckles, get Gene's aluminum turnbuckles, mod some things for the X ray arms, or the STR arms. You can research for yourself if you want. I haven't had any problems with the stock upper turnbuckles, but some have changed because they bend. The one other thing that you might want to look into is the upper servo saver bellcrank. In a lot of cases, that part broke, so CEN has a CNC one available. Again, I haven't had any problems with it, but it might happen. There are a lot of mods and tricks for the truck around on this forum, and on others. Info is everywhere, so your first choice to know something should be to search it.
Good luck. We're here to help.