Where to buy new VDO senders?

Can anyone recommend an internet site selling new oil pressure and oil temperature VDO senders for a 1983 Mk1 GTI?  I'm struggling to win any on eBay!!

I have an VDO oil temp sender you could buy off me. It replaces the dip stick, ?15 + P&P and it's yours.

Google

 'bigboystoys vw' they have the complete range .

can also try ETB

http://www.etbinstruments.com/Sensors_ancillaries.htm

these guys also have the pdf files for wiring up the gauges from this link

http://www.etbinstruments.com/Wiring_Instructions.htm