another gauges issue...

[Astromic]

hi guys,
it's my first post here in this wonderfull forum, my car is a '69 1300 beetle with a mild mods.,...
i have two questions and i know that there is some experts here could help me with...
1>>i recently got an air/fuel gauge(autogauge brand), but it deosn't come with the o2 sensor, so i need one,,,my question is where i could find such a sensor, is there is another car installs it as stock and i could have it from it...(the problem is i live now in egypt and there no place i can go and easily pick an aftermarket o2 sensor)...
btw, i bought another gauge(autogauge too) "oil temp one", and it works fine and accurate enough...
so plz support me guys where i could get this sensor and ofcourse fit in my gauge and works fine in it(somthing compatible)...
2>>i want to install a head temp gauge and i ust don't know anything about this device, i heared that an exhaust gas temp will be a fine replacment and reads the head condition as well...there is no such a device here in egypt too, so i need ur help finding a good part in the internet but with resonable price cuz i shall have a shipping fees and i don't intend to send for a gauge as much as the head costs here itself ...i could live with a fine used part if u guys gt any(gauge and sensor, i think a spark seat sensor)...

btw, nice rides u got guys, really nice work ...