Hello everybody,
I'm trying to find out what guitar I've been playing for the last 3 years

..
Since it was given to me as a gift, and it wasn't new when I got it, I don't have any manuals or documents, but after doing some research on this wonderful site, I think it may very well be a
RG7421.
-
Fixed bridge
- one piece neck WITHOUT bubinga stripe(s)
-"Japan" imprint, the succesory model is made in korea right?
-
serial#: F9902650
Now another other question is the pickups:
My dad was told by the man he once bought the guitar from that he had taken out the stock picks and put in DiMarzios.
I just checked that, and indeed they are, quote "
DiMarzio pickups, made in USA",

however there is no serial# or anything else engraved on any of them.
I have absolutely no idea how to find out what type of DiMarzios these 2 are, (you can't tell from the wiring and color of wax used, can you?)
photos(~400kb):
