Hello guys, I'm new to this site but I figured for my first post id give up a tip which some of you probably know. I had an exhaust leak coming from the riser so I took the manifold off and removed the riser but now I have these two holes to fill so I do some measuring and I come up with the solution of putting small freeze pugs in the holes, two in each hole. I also put boiler cement between them for some added protection when I installed the plugs and it worked great. If anyone need this fix let me know I have the part # of the plugs from dorman.