It’s probably just a clone of every other RTR engine. Companies like ASP and Kangke would make engines under various brandings. You could have an engine with your name cast into it if you ordered enough of them.

Putting a Pullstart onto a non-Pullstart engine requires you to change the crankshaft, rear cover, add a one-way clutch bearing, starter shaft, and Pullstart. Moreover, big block engines tend to be really hard on pullstarts because most people don’t preheat them before starting, don’t get them primed right, and often don’t have the carb adjusted right. Pullstarts, IMVHO, are only for experienced guys. Not to discourage you, but bump boxes really are the better way for starting buggies and truggies.