[Jac Mac]

They seem to run them exactly as you have it now, 'They' want to run with a negative crankase pressure for several reasons, if you vent the covers or valley you will destroy the way its setup & yes if its fitted with low tension ring packages you might have problems, but I imagine unless your car is going to be treated in similar fashion to a nascar racer that you might have a few other problems to iron out anyway.