WANTED - Petrol fuel tank, Exhaust, DS sliding door handle, OS door handle, Fuel Gauge, Coolant temp sensor

Needed for a 2003, 1.3, hijet, panel van.

Petrol fuel tank - leak in it due to rust
Exhaust, rusted form cat
DS outside sliding door handle, snapped off
OS outside door handle, very sticky, stay up so cant unlock it from inside
Fuel Gauge - broken, no low petrol light comes on even when there is no petrol at all, like it when i bought it.
coolant temp sensor possibly, in the process of working this one out
new radiator cap but i'm sure they are easy to find but if anyone knows a good part number for one that would be great.

If anyone has any of these that would be great, or knows of anyone or anywhere to get good reliable and hopefully not too $$$.

PS. need some anti rust stuff, not got it before, been told oxidising stuff is the best? was just going to get it form halfords but any other ideas would be great!

THANKS!