MLS gaskets are better, use them.
1)What rivet?
2)always replace O-rings (might as well replace a 2˘ part in your hand)
3)always torque sequence, and always the recommended procedure. You can't torque turn bolts when 4)you only have a final torque setting number and vice versa Manual: http://buellmods.com
5)lube the threads on the head bolts with oil like the manual says^^^
6)Paint your nails black, only the cool guys do that.
Just follow the easy to follow procedure in the manual link I gave you. No need to re-invent the wheel here, just keep it all very clean, follow every step, and ignore the old-wives tales from ex-Harley mechanics from the 60's