Very nice Valve covers BTW just my o2 put some bolt on breathers on those bad boys the rubber deal around the push on breather will get hard and sometimes leak oil all over the place and when they loosen up they start popping off then your really screwed.    

boost do drill the holes out

   Yes but why would you what to do that, do those valve covers some justice and go with a pair of bolt on    let me know if you need help got some time on my hands   

ok where can i get them and what am i looking for shit im going to find your # give me 5 min

Local to you Eddie Marine or Rex Marine they run about $43.00 each ouch    Sh't all most forgot make sure that they have removable tops so you can get some oil in.

  http://www.eddiemarine.com/store/cart.php?m=search_results&search=breather&I5.x=19&I5.y=9