HeY!!!
Cain what i noticed is that the T4 is more stable and has better traction through the high speed turns or else the rest of the turns pretty much even. Also jumping through the air it's a little better it seems like it has a softer landing.
i just got mine last Fri and raced once on the next day and i couldn't get enough steering but then i switched the servo saver spring to the B4 HD servo saver. i also might try different tires and foam inserts. that will be later though once i get use to off-road again. Just last sat. was my first time racing off-road in a yr. so yeah it was awesome. i might go down to race thurs. if i don't got much school stuff to let you guys know what else i did to hook truck up, and if not sat. night.