can I buy an entire 110cc engine from a rattler?

[Latch]

so I havnt posted on here in forever but Im looking for a way to get more speed out of my rough house, thinking of doing another stage 2/70cc kit but i would rather just swap the 110cc rattler engine into it, there are people on youtube that have apparently done this and done it on buddies as well, I know I can drop it right in if I could just get my hands on it but I cant find the engine for sale anywhere, does anyone have any ideas on how i could buy the entire engine/transmission assembly? or a parts bike/wrecked rattler, bent frame but running engine? also am looking for buddy parts bikes, I have a buddy 50 also that I would like to replace all the plastics on and the headlight is broken, and I would like to swap it up to a 125cc 4t if I could get my hands on one of those engines as well

[kooky scientist]

I have a 2008 Buddy 50 I am parting out. Engine runs fine but the rear wheel is siezed up. I decided not to repair at about 20,000 miles.