Put the 2.0L exhaust on, now the engine runs hotter... Options

[rhcb914]

A few weeks ago I swapped my 1.7/1.8 heat exchangers and Bursch glass pack muffler in favor of the stock 2.0L setup. I took the car for a spin and noticed right off that it was running on average 25 degrees hotter head temps than with the old exhaust. I figured that I'll tune it up, adjust the valves, synch the carbs and see how it runs then. Finally got around to that yesterday now that Noah's flood has receded here in NE. The car runs great but head temps are still 25 degrees hotter on average at all speeds. On the highway at about 3500 rpm it used to run about 325 and touch 350 climbing a hill in 5th. Now it seem to run closer to 350 in 5th and raise slightly past when climbing. Now these temps are measured with the super accurate VDO head temp gage (IMG:style_emoticons/default/smile.gif) so I'm not sure if I should worry or not. Other than the hotter head temps the engine runs great!

Should I be concerned about a restriction in the exhaust somewhere? Do these temps seem right?

Thanks
-Rob