Yeah, loved Project X. What an amazing looking game but the original was a bit too hard for me (or I'm crap).
BS was ace too. I remember being very gutted when it wouldn't emulate properly (long time ago now). I think the bullets used to disappear or something. I can't remember what was added to WinUAE to fix that .... hmmm
Maybe the collision level option?
Always a laugh nicking the powerups from your mate in 2 player co-op mode, especially if he really needed them