Yer, I know (re. the whole just put a regular one in and amp), mine's a pre-facelft 3RB with the McIntosh system, my sub has probably got a cone issue and my theory is that if I'm taking out the seats, rear shelf etc. then I'd rather have one to put straight back in...as opposed to my old idea of taking mine out to repair it and then refitting
Actually, if any of you guys are holding onto yours because you may want to go back to OEM at sale, we may be able to work something out where as a part of the cost to change over, I'll agree to get mine re-conditioned and supply back to you (obviously I haven't got an idea on cost of this at the moment but it could work out well)
Cheers,
Sean

