I have a nitro buggy and a brushless boat and i was wondering about getting an old 1/10 on road car and going brushless, with 8-cells.

So, firstly, will i fit 8-cells in a 1/10 car?

if so, i was thinking of something like a 540 8s feigao motor (4436Kv), will this be too high kv and not enough power?

and if that would be ok, what sort of current will it draw?

Thanks
I am new to brushless cars, so sorry if they are stupid ideas.