A Couple questions????

My engine is ready to put together with the 10.5:1 Egge pistons. My machinest milled the heads just to clean, about ten thousands. The block was not decked at all. The new head gaskets are about sixty thousands with the universal big bore in them. I really don't want to loose that much compression. Do I have any options?
Also, I am going to use the stock 273 2V exhaust manifolds. Can I buy a replacement heat shield similiar to the stock one? Why does the left side have an Exhaust "gasket" (heat shield) and the right side none? I guess there is no chance of finding original equipment head gaskets. ALSO!!!!! The KH SBP disc conversion I bought from a FABO member came with a bent bolt that attaches the lower ball joint to the spindle and needs to be replaced. Any suggestions there? As usual, all advice is much appreciated.
TIA, Rat:-D