Hi all. I'm new to the forum. I recently purchased a 1952 M38. I have a couple questions regarding the engine that is currently in the jeep. It appears to be from the 1950s, but I do not think it is the original motor for my M38. It is an inline 4 cylinder (I believe to be a L-134). The block on the driver side is stamped with the following number "646228-I-W4 AN1-CR-N2" and the top of the engine (just below the intake) is stamped with the following number "648830 1-15 C WF." I've tried to research these numbers and I've found some information on the driver side block number. I seem to keep coming up with a Willy's Truck motor, but I'm not 100% sure.

My jeep's serial # is: MC95888 (matching #s on the title and the ID plate on the dash to this effect).

Any help identifying this motor is greatly appreciated.

Thanks!