Things which you could custom make yourself like the custom inlet manifold and larger TB would be a good cheap mod, a de-ridged throttle body with a larger butterfly can be bought on an exchange basis for less than £50 which is good, then blank of the egr valve by simply fitting a blanking plate or 5p coin i think fits in the hole.
Fit a oil catch tank too as the plenums get filled with oil due to the oil breather pipe which runs from the right side of the engine across the top of the front bank and into the throttle body on the front.
Few of these daft cheap mods don't have make a diffence and help you gain a few bhp here and there for a few hours work and less the £100.
3.2 pistons are deffinately bigger and different than the 2.5/3.0 ones but i think not 100% that the heads are all the same tho.
Last edited by RUSSELLB1904; 26-03-2009 at 09:54 PM.