For the big block monster trucks, pick up some .28s, Wasp, RB. For the small block monsters get the OS .18 and the Sirio .23. 1/10 scale on-road, I think any of the NovaRossi based engines are great. I love my the NS12 S3. Sirio Makes a mean .12 evo 2, and for a great price. My next engine will be a Murnan Mod evo2, unless Motorman can get the red tape cut on his engine by the time I need it. His engine (Motorman's) should be a great engine. And from what he's been saying about the price.... I just want one. Anyway..... 1/10 scale gas truck, just about any .12 will do. They don't need any power. I like the OS .12 CV-R or the TR or racing. 1/8 scale buggy.... Well, all the brands have there "race" engine. I have a .21 OS V-Spec. I like it. For the money though, look into the Mac engines. They keep up with everything and at a lower price. For those who have to have the best, Andy Brown makes a mod version. 1/8 scale on-road: I don't know a thing. I'd like to know more, but never seen one run. Don't have anywhere around here they could run.

I've worked at my LHS for the last two years and raced for longer. This is just what I've seen in our area as to what to put into a hobby store. If my shop owner had any of the above mentioned engines, he would have sold a lot more than he has. No one in my local club has bought their engines at the store.

Good luck with the store.