As far as the Op's questions...
I became a buggy fan when I built my first one in '86 which was the Kyosho Javelin. By far the most complicated, but one of the most fun builds I have ever done. The kyosho Turbo Scorpion pictured above is by far the nicest kit I have ever built. The machining is...
Yeah, the no-prep stuff is huge bodied, but 1/10 scale chassis. Here is the DR10 next to a 6S Kraton. The Kraton next to the Mad Crusher (also from Tunedpipe), and the Mad Crusher next to a 1/10 Kyosho Turbo Scorpion. As you can see... something doesn't jive here when it comes to scale 🤔