Could try a hobbystar, just might want to put new bearings in it before giving it the beans on 6S:
https://www.rcjuice.com/hobbystar-3674-4-pole-brushless-sensorless-motor-v2-waterproof.html
I've run their 3660/3200kv and 3665/3100kv and they did ok in my eJato. I ran 4S in the 3665 for a bit...
Load will create more current draw as well. So if your vehicle is a really light 1/10th scale and your putting 1/8th scale electronics in it, it should do fine even when geared pretty tall. You will likely be wasting your money on TP/Poseidon motors for something like that though.
I run a...