Bought a 1983 320i. Need help.

So I bought a 1983 320i, It ran for two days while I was taking care of minor things. Then It died in my drive way. Its not getting any fuel its got plenty of spark. So I went to replace the fuel filter and it will not come off. I have tried liquid wrench and it still won't budge. Any other ideas on how I might be able to get the fuel filter off so than I can replace it? This curently my dd since my other car is out of commision till i win the lottery to fix it.

I had same problem, the filter was original on mine. After 30 years kind of hard to get loose, keep the filter connected to the car and use some bigger wrenches Trust me you think your going to brake it ( LOL I did ) but trust me it is going to come off.....