when i bought was told it's a big rock. but the big rock doesn't come with center support. I think it's and outcast. has rpm a arms, big bore shocks ( have original as well, have the original a arms as well, extra set of tires, extra pinion gear and 2 3 cell lipos. has the spectra firma 130 and bigger motor. 2s - 4s capability. couple extra differential gear sets. it's hard to keep front end on ground. awesome car just need to get ride of at this time