All post 90 Golf's are 24 pin single plug units, pre 90 double plugs will not fit.
I have a spare single plug unit showing 91,000. Let me know if you want it.
Both VDO & Motometer make the single plug ones btw.
Simply(!) swaping the rev counter over will not fix the MFA issue, the whole instrument panel needs to be replaced.
Rich. shinecello@hotmail.com