I have the opportunity to get a spare FD off of a 2005 LT for 170.00 with shipping. It was taken off for a trike conversion and is in good condition and no metal chips when oil was drained out. Is it worth having one for a spare at that price? I think that is about 1/2 the cost of a rebuild if my present one goes bad so I am not sure if it is good insurance or not. I suppose if I were to take a long trip it would be good for a failure away fro ma BMW dealer.