New Delco Remy 180 amp alternator £198 +VAT, & they require your old alternator in exchange as well That's a shocking price for an alternator, but then again, it's a big car with a big appetite Anyway, alternator now replaced & all seems good. Took a couple of days at a leisurely pace with lots of tea breaks. Did the taking out from the top method as opposed to the workshop manual method (the underneath method) & it was probably alot easier & less back breaking, but probably just as time consuming. One positive thing though about doing it from the top, is that you get to remove the throttle & it's attached plastic manifold thingy (don't know the correct name for it) & see how much oil & caked on carbon is actually in there & how much this build up of crap is actually affecting performance. I spent a bit of time cleaning all the soot & oil out & the car now seems to breath a little better & be a bit more responsive