i very recentle acuired a 1980 tta. im having trouble with the exhaust manifold bolts. the type of trouble that requires drilling and tapping.......is there a better way to do this or does the heads have to come off to fix them.
im not a pontiac guy, this is my first.
	
		
			
		
		
	
				
			im not a pontiac guy, this is my first.