And there you go, I thought about loctite and decided to go the other way. I used nickelcote. My thoughts were if these bust, I want to be able to get them out. My understanding is that they don't work loose [but you have to check them as the gasket/manifold settles in], if anything, they snap off. Note however that I had none snapped, they all came out without any problems, they all looked in very good condition, but I replaced them anyway. My car has 62k on it, but like many the mileage can be questioned [although I gotta say it certainly looks like sfa]. And I used genuine nissan parts, inc. gasket.
Guess I'll see what the results are down the track.
PS I didn't have a problem, I'm just changing manifolds and turbo's etc.
PPS Jeez I hate doing something against SK's advise, makes me think I've got it wrong!!!