Nashbar's got a 1 inch suspension fork for sale for 100 bucks:
http://www.nashbar.com/profile.cfm?c...%20ATB%20Forks
But, it's 80mm travel, so I think it'll stick your bridgestone's front end way up in the air, and the bottom bracket, too.
Incidentally, I just bought one of those 19 dollar Suntour forks for my Bridgestone MB-6. It's going to replace a Softride suspension stem. So, maybe I'm not the best person to ask about suspension.
