You can get the t-series snorkels from your local ford dealer
part number TAUTVE9A624A.
I dont think they make a great difference... but i dont have the dyno so i dont know!
The T-Series instrument cluster is an XR8 cluster with white dials.
It will fit your ute yes, with all looms in place. But apparently you need to make some changes to the oil pressure switch on the side of the engine to control the oil guage. Dunno what though.. this is just what I was told by a mechanic at work.
Are you guys chnaging the air filter as well when you do this mod.
If you are opening up the intake but leaving the restrictive element in place then the improvement won't be nearly as good as changing the element as well. Different elements themselves can add between 2-5 kws.
IF you guys are thinking of changing to an aftermarket filter, choose either K&N or King Dragon they seem to be the best in the business. I've got the O2 Rush but will be changing when finances are available.
Oh yeah i moded my snorkel to the EL GT/XR intake scoop, they're actually bigger than the TSeries one and actually fit the E Series falcons.