Having played in both C-10 and TL: I can tell you C-10 is not and will not be cost a effective class and the rules are constantly being challenged with how about this motor option and that. As for TL under the previous leadership; it was money game and those in the loop (inner fire circle) got what they wanted ie: Opened up the trans, updated hubs, SCORE legal cages/updates, motor size/brands increased, shock package changes, body change, rear end swap, mandated tire/wheel deals and lots of other "updates" etc... and at that time they had an HOA that proved itself less than interested with the racers concerns... Another issue is odd things seem to happen when you have a single or mandated supply chain and/or a dictatorship. There are only @ 30 total out there and a number have become play cars or are not updated = not nearly the comp even with the split classes... Fun to drive but a lot of work for the speed.