heat and a/c problem

[SVTfirebird]

well i live in wisconsin and it gets pretty damn cold and ive never had heat or ac in my 95 3.4, now i finally decided to do something about it, my geuss is that the heater core is crap and maybe the condenser, the fan works and blows but the air will only get lukewarm when my temp gauge reads like 190. any help or feedback is greatly appreciated.