Hello all I am looking for some advice as I can get any here in the uk. I am trying to do a install on my lr4 and have a set of ion mini t and a set of vertex directional light heads. Can anyone tell me what will be the most effective head on. Also with speakers I have a sa314 the metal one and a sa315p the plastic one is there any difference in sound. Will one produce a better sound ect cheers steve