HELP!! with my 75 Dart

Lol..well.. Lemme just say... I drove her today..into a shop..they said they would be happy to give her the.."once over" of course..it'll cost me $ out of pocket..that i just don't have right now..just to get a damn estimate.. Any way.. She was ruining.." Ok"..i was still having to double pedal her at stops..to keep her running..then..bam...she backfired.. and from then on out..she ran shitty.. I was lucky to get get back to my mom's..
There has to be somebody on here close enough to look at your car. I'm willing to bet that the people on here that know their stuff (I won't pretend I'm one of those) would spend 20 minutes and know what the problem is. Again, a video would help immensely. I don't think you can post vids on here, you'd have to set it up on youtube and link it.