I've been looking for a 4 speed vespa whether it be vintage '60's or new px150. I had inherited my dads '66 which is torn down ready for paint. I also found a 2005 px 150 for $2500 with 2,700 miles. Would you invest the $2500 to buy the 2005 px150 or dump it into the '66 vbb150. I would really like to have a newer px150 but I can upgrade the '66 to what the px150 is.