Badger, a TF135 should have the aluminium manifold already fitted, the 52mm TB is a good upgrade.
Thanks for the info Bryan,
I know the 1.6 MPI is ABS plastic but did not know that all TF 135's are aluminum, I have an 05 TF 1.8 MPI which is a stepspeed (120 BHP) but was originally fitted with a plastic manifold which I have now fitted the aluminum version from a Land Rover Freelander, plus the blue injectors that came with it.
Brian.