It seems some Porsche folk swear by the numbers, while others are happy to outlaw and modify thir cars. Certainly, the numbers on the M471s and early-S's seem to matter while no-one seemingly gives a fig about swapping out Sporto gearboxes etc on a T
Over here there's talk of the people with the money buying "real assets" such as cars as they are less risk than the stockmarket, and as a result, you might want to loik in your nearest barn for a 60s Aston Martin (you NEVER know!)
Personally, I see the investment potential limited: the Pagoda is not an "art car" collectible like a D-type or 250 GTO, but is a well built useable, fun, practical old car which will always have a market. Until we run out of gas, that is. So mine's a driver that I spend money on (a LOT this week) so I can enjoy it, know I am looking after it and hopefully not burn too much capital in the process.