broken exhaust studs

[Wookee]

I did mine yesterday 42k's worth of seized nuts came off reasonably easily with heat and very gentle persuasion. I had put penetrating fluid on the previous day just to get something on them, I can't quite see the point of doing it for days as it either goes in or it doesn't. When I was heating the centre ones I did spray them again after the first couple of minutes of heat before re-applying. Once I got the first bit of 'give' in the nut I rocked it back and forth a few times before applying more pressure to undo it.


For the time being I've had to put the old nuts back on as the new ones I ordered aren't domed. Can anyone give me a link to the domed ones please?