Spares/comsumables needed

I always thought my 1983 Honda NV400 was a rare bike, bit it seems it is almost identical to the 1983-86 VT500 Shadow, which is a fairly common bike, especially in the US.

So I am looking for a place to buy parts, air filter, which is currently a bodge, carby repair kit, a couple of pickups and a few other bits.

Also if there is a big bike breakers, that would be good too as I need a replacement alternator cover (called something else) and a few other bits.

I am based in Khon Kaen but could travel or mail order if they are reliable. 

Cheers