Front springs - readily available

[C-Rex]

I'd say your thermostat is sticking Paul should be a handy fix..

[C-Rex]

http://touch.adverts.ie/car-parts-ac...-8-sir/4583229
They are the sidelights too I think it's Mickey Thorn on here has them

[Sirstan]

As Paul said temperature & heater being cold is defo a thermostat, only approx 15 Euro from motorfactors and 10 min job.
Your bad idle is more than likely down to sticky throttle body. Just needs to be removed and cleaned down with carb cleaner.

[crx92ie]

Good to know you're still alive, Stan!