For a direct replacement, try a feigao/bidproduct/hobbycity 540 XL item, ~1900-2200kv for 4s lipo use.

For a decent replacement, look no further than the Medusa 36-70 or 36-80 motors, same kinda kv range really.

How heavy is the truck/ pics & specs?

Thanks for the advice I seem to have seen one on here or impakt i believe.