Bought a 1978 Dodge 318 V-8 from a lady whose husband had previously restored older D-100 type Dodge pickups (60's,70's era). She had no idea what it came out of but with the work that had been put into it, I just couldn't pass it up. Now the kicker, I'm working on a 1970 D-100 which came with a 318 and a manual transmission.I'll admit I'm a newbie hence my question, how can I determine what type of transmission the '78 came with originally? It does have a D N stamped on the left side of the block with an arrow pointing forward towards the D. Also where the tranny and engine would mount up, the block is stamped with the following #'s and letters runing from lower left upwards, to upper right downwards, following the "fan" shaped outline of the front part of the tranny. Any help is greatly appreciated! 4 2 L R