Need Help..Cal Custom valvecover question

I got a set of polished calcustom v/c's off a local greybeard who hoards parts. He "loaned" them to me. one condition, I put no holes in them. so, how can I use these without breather or oil fill holes? tell me theres a easy cheap way! these are perfect! BTW, its a sbc. Help! thanks

 

Put'em on a stock 283"

 

Use a manifold with the oil filler tub in front.
Drill it somewhere where it'll open straight to the lifter valley and put a PCV valve in that hole, like some Pontiacs do.
Run a oil filler cap that is sealed but has a hose going to the base of the air cleaner. That will keep the filler tube and the engine from getting slimed with the blowby.

 

This might help: http://www.jalopyjournal.com/ubbthreads/showflat.php?Cat=&Board=UBB1&Number=101835