Dfend, the Maverick 88 is the Mossberg 500 on all but 2 parts. The reciever and the trigger group/ safety are the only differences between the two. ANy stock for the m500 will fit the 88. Same with barrels. When I gave my maverick to a friends kid, it went with 2 mossberg 500 barrels that I picked up for it over the 17 years I owned it, and they fit like a glove. Pick up the parts you want and go for it.
If I have to explain why I ride, you wouldn't understand. Explaining sex to an alien would be easier than explaining the feeling, one that boils all that is going on in your life down to what really matters each time you are in The Wind. All I can say is, Life is not Life without it.