All of them are fine, yours is a VE type engine, not sure exactly what the VE stands for though. Anyway yeh you could do away with the egr and fit the PD150 intake. Regarding the egr you could just pull the vac line off the top, the egr is the big round one on top of the intake, left hand side when you're looking at it, then just plug the vac line with a bolt or something and that's it deleted. That way you can keep the asv (anti shudder valve) which helps with shiutting the engine off smoother. As for mileage, it doesn't really matter, these engines are good for 500,000 miles anyway if looked after. Really tough sods.