i don't know if this post goes here but i'm going to post it anyways. i just read that with the stock diff' that only one tire spins. i have a '99 csvt,(only mods are intake/mufflers) and have never had any tranny work done, but when i was at the local empty parking lot i laid 20+' of rubber from both tires. i've done this consistently on every burnout. both tires leave rubber. what the deal in this case? bought car from toyota dealer with 33,000 miles and car was in stock form.