vdo oil pressure sender help

[kezq]

I have recently acquired a set of which I believe to be VDO 1993 audi 80 coupe gauges which I am hoping to fit into my 1974 1303 VW beetle and would greatly appreciate any assistance you may be able to pass on regarding sensors for the above.
I have also collected a VDO dipstick sender, but on doing the old boiling a kettle test, found the gauge was at least 30 degrees out at boiling point.
The oil temp gauge has the codes 310.284/12/4 vw part: 893 919 541 10.93 and would require the appropriate matching sump plate (M14 X 1.5MM) and/or oil pressure relief plug (M18 X 1.5MM) sensors.
The oil pressure gauge has the codes 350.272/3/4 vw part: 893 919 551 10.93 and would require the (M10 X 1.0MM) sender to work along side the stock VW oil pressure switch.
Unsure of any info on the dipstick sender, but would like to know if there is a compatible item to match the gauge above.
Any codes, part numbers or info would help me tremendously.
Many thanks,
Kez