Help identify this engine.

I pulled this from a 1985 Jeep CJ7 with a T5 transmission. It is an I-6 that looks like the AMC 258. It cannot be a 258 because there is no place to mount a mechanical fuel pump and the block code has 7 digits. It is an AMC engine because is has the AMC logo stamped on it. The block code is 808MXII. I called 2 local jeep dealers and they have no info. What is this engine? Thanks, David.

i beleive this is a 242 mfi that they put in 1986 jeeps. if it is mfi then this is the motor. If not then someone could have took the multi fuel injection off and carbed it. the reason i say this is because the mx usually represents the amc 242 4.0 liter. 8=86 08= august mx=242 and II i beleive is a 11. which would eaqual 11th day of the month so it would be a 242 built on august 11th 1986