74 dodge dart tranny issues

how about changing the filter and fluid and adjusting the bands???

the overdrive you want is a 42rh which is based on a 904, the 46rh is based on the 727. the last year it was made was 1995...after that they were electronically shifted.

dont know what year they first came out.

but as Bill said above it will take some cutting to get it to fit.