RRR is correct in that you are asking about two things that are somewhat unrelated to each other.... You seem like you asked how to safely do it, then looks like you arent going to bother with any of that lol, now the kickdown is screwed up (how?, lets fix it), but you have consistently asked about a valve body and burnouts.....Trucks are light on the A$$, it'll do burnouts, I Gar-Un-Tee lol. Spend your money on a roll-control, it'll do 'em all day long!!