Also, some of the engine codes (e.g. ME and MF) were used for BOTH solid lifter and hydraulic engines (good one VW). Because of this, the engine code is not a definitive way to determine which style of block it is.
Don't take my word for it, but this should be an MF, so 88-91 TD - Cdn Jetta, in other words, CY
Since my tranny is mid 90's jetta, I'm not surprised.
I'll send you a pic of the area under the head.