Do pocket bike parts fit?

Hey y'all Do Pocket bike parts fit pocket quads. I know it seems stupid but buddy asked me and I didn't know so I figured why not as people who would know.

engine parts will fit 47cc to 47cc,but there are 49cc engines that look like 47cc's some parts from the 47's will fit the 49's......

my chain and sprockets are different much larger I think its #35 or 8mm chain but everything else is the same or fits the same