I have a 87 gn that i have been working on and off for 4 years. Just had motor rebuilt about 500 street mikes noticed i was losing fuel pressure. Well today i finally got that issue fixed. Dang e85 ate up my high dollar fuel line in tank and clogged the pump strainer. So im feeling good and car is finally making power. So i heas down the road and get into about 7 pounds of boost and smoke pour iut of the hood. Crap. Pull over and see the pvc valve blown off as well as the turbo vacuum line. So much for the clean motor. But know i have oil smoke coming out of the valve cover breathers. Is this a blown head gasket? I dont understand I've used the best gasket with ARp bolts. Need advuce please.