These are just two different bodies that I quickly found that are on the Team Associated Pro4 SC10 chassis.
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The body that comes on the Team Associated Pro4 SC10 platform is the
Contender body.
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That body has been around since like 2012. As you go shopping for bodies, you might see descriptions that say they fit the SC10... you'll, most likely, have no problem with lining up things.
Yes, people have put all kinds of bodies on their short course trucks. VW Bugs to
muscle cars, and beyond.