I would suggest sourcing a TDI cluster to do the swap. The GLI cluster will not have an LED in the glow plug spot. It would also require an EEPROM flash to convert the tach to the correct RPM. Lots available for cheap in the UK. Swapping faces to get KPH is easy.
https://www.ebay.co.uk/itm/VW-BORA-...TH-CHROME-SURROUND-1J5-920-926-C/372248099012
https://www.ebay.co.uk/itm/VW-Golf-Mk4-Bora-Sport-Clocks-Diesel-1J5-920-926-C/263412479418
If you want to save a few bucks, you can get non sport ones for much less:
https://www.ebay.co.uk/itm/Volkswagen-Golf-Mk4-1-9tdi-Instrument-Cluster-1j0-920-926-C/282926968704
https://www.ebay.co.uk/itm/VW-Golf-...Cluster-Unit-Bosch-1J0-920-926-C/361900436434
Do a search for the following part numbers to get more results:
Sport 1/2 MFA = 1J5 920 926C
Reg 1/2 MFA = 1J0 920 926C
Sport Full FIS = 1J5 920 946C
Reg Full FIS = 1J0 920 926C
Breakdown of the part number:
Example: 1J5 920 926 C
First 2 numbers indicates what type of vehicle the part is from. (1J=Jetta/Golf, 1C = Beetle, 3C = Passat, etc.)
Third number indicates type of cluster (0=plain, 5=sport)
Fourth number is always a 9. It just means that it is an electrical part in the ETKA system (1 = engine, 3 = transmission, 8 = body, 9 = electrical, etc.)
Fifth & sixtgh number indicates whether it is a CAN BUS cluster or not (19 = no CAN, 20 = CAN)
Seventh digit indicates speedo miles or KM (8 = KM, 9 = Miles)
Eigth digit indicates whether it is a plain, MFA or FIS cluster. (0 = plain, 2 = MFA, 4 = FIS). MFA = half height display, FIS = full height display
Ninth digit indicates Immobilizer info (>5 = Immo II, 6 or 7 = Immo III)
The last letter indicates the engine type & transmission combo. It provides the info on tach redline, top speed on the speedo, whether it has the automatic LCD window, etc. There are MANY possibilities on deciphering that letter as it varies from year to year. I have not researched it at all, so can't give any specific examples other than the C in this example has diesel tach, manual transmission, top speed 260kph.
You can source metric clusters from germany, or france, but they are typically much more expensive. The best option is the UK and swap the speedo faces.