If you are gonna install LT's make sure they are ceramic coated. That and the new hi-flow catted H / X (which will reside below the front seats) will reduce the under hood temps by a good 40 deg F (22 deg C). That's a huge drop. The big reduction comes from the hot cats now being further downstream, aprx right under the front seats (oem are at base of eng bay). Ceramic coated LT's don't get anywhere near as hot as non coated LT's....or the oem exhaust manifold. They are coated inside and out. The exhaust gas temp is higher...and flows faster...which I'm convinced is a big part of the overall gain. LT's are about the closest thing to a free lunch there is.
Typ when LT's are installed, that's when the new engine mounts are also installed. Several to pick from. I used the steeda version, which allowed for a stock eng height, or a 1/4" - 1/2" - 3/4" lowering of the engine. I used the 1/4" drop option, which allowed more clearance for my roush CAI that feeds my roush M90 blower. It also lowers the center of gravity a bit.
When new eng mounts are installed, the oem heat shields are re-used. These are the oem heat shields that cover the eng mounts.
Stock eng mounts, imo, flop around too much, and are too compliant.
