Hello and welcome back to this superb hobby.Don't bother with any upgrades race it boX standard,race mine on astro and grass.If you find the front dives heavily on cornering get truck red springs 35wt oil for the front and put the kit silvers with 30 wt in the rear.As for motors,alot race 10.5 brushless but if you want more oomf 7.5, ONLY UPGRADE I WOULD SERIOSLY DO,PUT A WASHER INBETWEEN THE REAR WHEEL AND THE NYLOC NUT OR YOU WILL BOTTOM OUT THE THREAD ON THE SHAFT AND STRIP OUT THE PIN SLOT ON YOUR REAR WHEELS AND RUIN YOUR NICE NEW WHEELS (ALOT OF PEOPLE DO THIS STRAIGHT AWAY) ,hope this helps jon kedge(sc10,kyosho rb5,hpi cyber 10b)
