What I did is use the heavy exhaust gasket material (the metal stuff) and replaced the gasket under the valve going into the intake with one that didn't have the big hole in it. Seems to be working fine (or not working in the case of the egr). And all that cost me about 15 minutes and $0.00.

__________________
1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k