Been there done that
I had some pics a one time but...........slight whoopsy with the old computer. ( I know all about "backing up " now )
Any way. Its not difficult at all, just need to be certain you want to go down this road cos ya have to cut a notch out of the stock.
I used an old Crapco grip, just cos I had one, and the whole thing took like 30 minutes from thinking about it to a dry fitting.
Once happy with the way it went together, reassemble with LOTS of JBweld.
There is room for a grip if ya really want to do it. If you were local to me we could do her up in no time...........it really is that easy.
Since I did that I went nuts and put a sliding stock on it as well
Im going to have a troll thru me drawers and see if I can find anything I kept that might help.
The stock behind the trigger group is solid and perfect for taking a big ass self tapping bolt ( THIS IS A PERMANENT MOD,HENCE THE JB WELD).
If I can think back I'll do up a couple of drawings to give ya an idea.
At the end of the day its only a cheap ass plastic stock....right

)