i got the 22. yes it will fit a 4 door. what is nice is they give ya quite a bit of extra wire. you can ask for a trunk kit too which gives ya longer wire yet. i would have loved to stash the fuse box in the trunk but i was affraid of beating the hell out of it with all the crap i have in my trunk..lol
its a very complete kit but you will still need wire and connectors to adapt it to you specific car. it doesn't come with the weather packs or anything like that. i also had to buy the terminals to rebuild some of the original connectors that i anted to keep.
its more a street rod kit but adapted very easily to my car. go here http://www.automotiverewire.com/Navagation/documents.htm and scroll to the 71 dart page. they are the diagrams we made when wiring my car for the ign system, charging system ign switch wiring and turn signal wiring..
