Well my parts arrived & I installed them today. I had to rotate the bottle 90 deg to maintain the proper angle for the oem connector and I also had to move the oem dual stage regulator to gain more clearance to connect the 12' propane hose to the top of the T. I had planned to move the regulator anyway because I wasn't happy with the way that the feed hose at the bottom of the regulator was forced to the side by the curvature of the tank. Anyway, I checked for leaks after installation and had a couple of bubbles at the 1-20 fitting at the top of the T. A little additional tightening of the knurled fitting nut fixed the problem. This afternoon I sacrificed some steaks to the propane god & everything worked great.
The only PITA is cleaning the grill afterwards. I sprayed the grill grates with pam but next time I will spray the area below the grates also.