I'm going to be ordering one of the red dot engines for my T-Maxx project very soon. It's been sitting on a shelf waiting on some parts, which I recently bought from Lessen. I've gotten out of nitro and moved on to better things, but this T-Maxx has a lot of sentimental value so I kept it, and I will be doing the full show truck/shelf queen treatment, but I will run it once or twice a year, and I've decided that the red dot has everything that I'm looking for in an engine.
If I was going to be running it a lot, I would run the OS .21TM. This is a really nice motor, and I still regret selling the brand new OS .18TM that I had. THe .21TM has stupid power and the OS is some of the best running engines out there IMO, and the best at holding a tune, and maintaining a smooth power band. I'm not comparing the OS .21TM with $1200 racing engines, but when you compare OS to the same class of engine in other brands, I would take the OS any day because of the quality. Since I'm looking for stupid power and was considering doing a big block coversion with a high end .28, I've decided on the .26 red dot, although it's way more power than a T-Maxx can handle, even on a well prepared track. I'm really wanting to find a truggy conversion kit similar to the old mutant maxx kits to help with the suspension side of handling that much power.