Well he got the talkin' part done. The numbers don't lie.

Looks like its p/n 3410 671.
1970 440 sx/pk trans is 672.
1971 hemi trans p/n 3515849.
1971 440 sx/pk p/n 850

With some Mopar parts the casting number may be different than the actual p/n but will usually be very close, not sure if this applys to transmissions too. Snatch up if turns out to be any one of the above.