So I'm new here, and like the title says, I just got a 1991 740 with the N/A 2.3 4cyl. I haven't spent much time under the hood yet, but I'm already planning basic maintenance stuff like fluids/flushes and some oil leaks that need fixed. I also want to eventually build it into a sleeper/autocross beast. (I'm thinking 400ish HP, suspension/brakes/cage) but that's all pretty far down the road at this point. This is my first Volvo, so I'm looking for some pointers on things to look out for, common problems, stuff like that. Any tips?