help identify this transmission. Supposed to be A518

Thanks guys! That's great info and much appreciated
I have tried the Transmission centre site years ago for a plug but it didn't fit. The 3 pins didn't align up. I gave them a call and they said dodge stopped making the plugs and their one doesn't fit properly but I can make do with it. I will call again and see what I have to do to get it to fit.

Thanks for the info Transman! I should be able to cut the 91g weight off and use it. I will either have to move one mounting foot or just elongate one hole in the flexplate. The stall should be ok as I cant seem to find it at the moment but I remember reading somewhere that a standard stall was ok for my cam. Here is my camshaft.
http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=661&sb=0

With the 2800 stall converter in my other trans I seem to remember when I ordered the trans that they asked me what stall I wanted. I told them 2800 and also said I didn't need it to be a lock up. They brought one from Dayco and sent it with the trans. I don't know if they pacifically ordered me a non lock up or if they just sent a lock up one as they are now out of business. I will try to find some pics to see if I can see any numbers on it as its still in the car. I do have a vibration/shudder that comes and goes almost like its timed to come in and out. Its does it in every gear except overdrive. Even park and neutral. I was wondering if it has something to do with running a lock up box and a non lock up converter. Maybe to run the a nonlock up converter I will need to change something in the valvebody. I can always try to lock it up while driving it. Just worried I may damage something. Found this pic of the converter but cant find one of the other side where the numbers will be stamped