most likely a 727. dodge tened to use 727 on trucks. the shape is the give away. find a site that that has pics.. trans-go should have one. a shift kit from them is easy to put in, but do not make it to hard of a shift. if your rear end is a 7 1/4 a shift real hard WILL strip the spiders over time. i found an EXTERNAL trans filter. i have one in hopes i wont to change the internal filter as much. point of history the 1963-1964 new yorkers had one from the factory. use high pressure hose. NOT carb fuel line. chrysler trans should be using 3/8 tubing.
man o man i about forgot yes its a cut & past sorry. __________________
after you clean the trans. add this to your*chrysler*trans. an external fluid filter
1. go to auto-zone. get 2210, its called a power steering filter, but it is for transs to. it is for 3/8 tubing. by (magna-fine) be sure to use high pressure hose. Reff:http://www.magnafilter.com
2. for other sizes wix 58964 5/16 tube size