I used a 351 fuel pump block off plate to cover my EGR holes after I deleted it. Just make sure to keep the gasket to place in between. It bolted right up, and cost like $10. As far as the EGR tube on your headers, I would use a 5/8" brass plumbing nut, they are at Home Depot and run under $3. It threads right on with a little effort if your threads are not too bad. Also, I would recommend removing the charcoal canister and the vacuum and vapor lines, since they are no longer necessary and have a tendency to put off fumes later down the road. I still have the A/C, but removing it can shave about 55lbs. off the front end, possibly more, and cleans up the engine bay nicely.