Has anybody removed the pollution hoses and bottle of there r33 skyline? The reason i am asking this question is i am fitting a aftermarket exhaust manifold and it looks like i am going the have to remove the plumb back pipe and a few of the antipollution hoses to fit my new manifold.Being that the plumbback pipe is all ready blocked due to running an aftermarket blowoff valve this pipe is no problem.Has anybody run into problems removing these items?