Wow! Thanks for the quick response guys. The engine mounts themselves are alright, but I do know that my engine shock bushings are bad on the drivers side of the engine- they disintegrated when I was replacing the oil cooler lines. I will switch the return and feed lines and see if that makes any difference in the idle quality/power. The problem is pretty steady for the past week- banjo bolt on the intake is relatively clean, usually makes good power (enough to hit 100mph without too much struggle) up until recently. I just changed the pre-filter and main filter on Tuesday, so I don't think that's it. Oddly, it idles better when I first crank it up in the morning. Thanks for the help!