Small update for any who care, project is currently on hold as my brothers turbo IS300 decided to throw a rod and I had to lend him my DD while he's getting a new block... hopefully we'll have that car back together next weekend so I can pull the motor and start fabbing up some mounts for the 5.3, Also interesting fact about the 5.3 that I just found out today at the engine shop. Some of the 5.3's with a certain casting of the heads leak a small amount of coolant into the block. Most people think its a head gasket leak but certainly this plagues many of the 5.3's so I'll be checking the heads for the casting and see if mine are plagued, hopefully not!