I started with a 2.5r. It was OK for a while, but, after about a gallon, it just felt slow. Not because it was wore out, but, because ........it was just slow.
Now, It's got a picco .26 max, THS race pipe, P2 rockers, built shocks, 102mm pushrods, single steering servo, forward only conversion and some other small mods, and now I like it a lot! Oh yeah! A roll cage to protect it all! Now all I need is a wheelie bar!
Over all, it's been a really tough truck. and now, it's a beast! that will run with the best of 'em.
Enjoy! There are sooooo many mods available, it's addicting!