You're welcome.
They all use the same mounting dimensions.
Otherwise, they would only be able to sell engines to owners of one brand of vehicle.
Most R/C vehicle manufacturers don't make their own engines anyway.
Any "small block" will fit. I've been out of the game a while myself, and went down a rabbit hole since I answered you.
There are now engines in the .12 - .20 (3.3 Traxxas) range that will bolt right in.
If you're looking for utmost performance, I recommend something non-pull start.
But then you have to buy a starter box too.
If you're just bashing/tearing around parking lots, pull start is fine.