Decent exhaust manifold bolts

[brett84]

Evening All

I've been reading posts on here and elsewhere about ideas to stop the exhaust manifold bolts working loose but has anyone actually used any or have a tip on what to do?
I've tried ARP bolts and nord locks but I don't think the ARP bolts are long enough really and still work loose.
Like the stage 8 - http://www.stage8.com
or http://taylorvertex.com/vibe-lock/
maybe even just some standard decent length bolts with nord lock and thread lock?
I'm just not sure what peoples experience is and what's best. I'm not sure if there is enough room to fit the above?

[brett84]

after some more reading, i'm going to try some high temp thread lock, use ARP bolts for the hard to reach underneath ones and slightly longer allan bolts for the top ones. Hopefully this will work out, one way to find out.
The exhaust bolts are 3/8" and 1 1/4 long apparently