For anyone reading this who hasn't played this mod yet, play it. It's an absolute blast to play, it's challenging, but not unfair (except for how extremely brutal the races can be, but that can be beaten by learning). 10/10 mod.
Hint for the card at the expresswayYou need to complete story missions before you can gain access to the areas required to get that card. You won't be able to access those areas if you used Mission Select to warp to an earlier mission before the barricades were removed.GagsGags were mostly untouched from the vanilla game. You can find walkthroughs about Level 5's gags which will help you find the one(s) you're missing in this mod.