rad caps and termostats

I see from an eariler post that HJ recomends Nippon parts
where do you get them from?
I have now had three stats from different places and they
all have opened once or twice and then stayed open
I have scoured the interweb,but I am just a thick old Geordie,
older than Woody even!!
                          Cheers Geordie

GEORDIE wrote:
older than Woody even!!
                          Cheers Geordie

No-way....Woody is as old as old can be ....you just can't get any older than Woody .

I've just fitted a "Gates" thermostat and after about 500 miles of driving, it still works:

http://www.mister-auto.co.uk/en/coolant-thermostat/daihatsu-hijet-box-s85-1-3-i-16v-65hp_v14104_g316.html

I bought mine from a good local motor factors and it didn't cost quite as much as the above link, but I hope it'll give you a start to find one cheaper and more local to you.