I was actually looking into it. If I was going to run a 3s setup, use a 1512/1Y or 1515/1.5D. Either should easily make 35mph.
But I have a 1700kv Tekin, I'm going to run that on some lighter 4s packs and gear it for 35mph.
Should be no problem to run Mod1 with a Revo spur correct?