Thanks all for your responses - definitely an interesting topic I think, as Jazz basses did look incredible in the late 60's/70's. My favourite look is the maple with white pearl inlays, which is what I would get. The rosewood with white also looks amazing. Least favourite is the Geddy Lee black on white look, which has grown on me, but is a little bit contrasty for me.
I should have said in my first post though - I didn't really want to just pull off the neck and stick a new one on it. It took me ages to save up to buy it in the first place, and now it's been around the country with me a few times i'm quite attached to it. So i'm really just looking to see if it's possible to have it modded a bit just to perfect it
NancyJohnson - thanks for the link to Knight Guitars; I'm going to drop them an email now. I have had a quote for £300/£400 so far which was a bit pricey I think. I'd happilly spend of the order of £200 - but then would also want to know they were going to do a smart job on it. Did you hear back from them at all?
Rich