4 speed trans id and other info needed

yeah, from what ive seen in articles it looks like an a body trans. anyone that has any info on this trans like what engine it was used for, gear ratios, and what all i would need to fit this in a 73 scamp with a 340...that currently has a 225 slant 6 automatic in it please leave some info. im young and havent had much experience with mopars or older cars for that matter.....