I need help! I have a Volvo 850 turbo wagon that needs a major tune-up...?

[marryme_alig]

but I don't have the hundreds of dollars it will take to get one. (Recent divorcee', making $8 an hour only part time). So I'm wondering, can anyone help me out here? I need to know what parts I'll need to get so someone can install them for me for cheaper than the dealer would.
Thanks so much for any help!
Year is 1995.