1997 CR125R, possible gorr motor?

So I picked up a bike last summer for 500 dollars in great mechanical condition, and descent cosmetically. I blew the top end last year due to overheating, and when i tore it down, realized it has the 56mm Wiseco piston.. I then knew it was already a 134 just cause of the bore. Looking further into the motor i saw the rod said in big bold capital letters, (HOT ROD) on it.. So I'm wondering if this motor was a Gorr motor, or if it was just possibly stroked? how could i find out if it has been stroked? Im only 16, so any advice helps. And by the way, I've never ridden a more ridiculously powered 125, and I've been on at least 10 in my life.

Thanks Guys!

Ross Olsen