What kinda engine is the head gasket getting used on? 383? The bore size is pretty large 4.200, if its on a 4.155 bore or something then that's ok, but on a 4.030 bore you should try to find a gasket that more closely fits the bore. Did the calculator you used take into account the bore size of the gasket or did it simply ask for the compressed thickness?
I looked and couldn't find anything that thick in a smaller bore. Closest I could find as 0.051 for a 4.060 bore.
What piston are you using with a 72cc head that is requiring you to use such a thick gasket to get to 11:1?
Don't use that cam swap gasket set, its crap. Use this one piece oil pan gasket (or the correct one for your year block).
http://store.summitracing.com/partde...T&autoview=sku. The one piece oil pan gasket pretty much eliminates leaks and makes swapping oil pans much easier.
and this
R.A.C.E. set
http://store.summitracing.com/partde...5&autoview=sku
and for the intake get a set sized to match the openings on the heads you are using, fel-pro makes some nice ones and use RTV for the end seals.
And a good set of valve cover gaskets.
This is all the stuff I have on my 406. Use good hardware and if using an aftermarket oil pan, check it for fitment. I originally bought a hamburger pan and it sucked so bad I sold it and bought a moroso pan, which fit much better.
Chris
(not a pro, but a backyard DIY guy)