The bottom end on the WC-1's and NE5's are very tough. It's a shame they are not interchangeable with the vintage motors. Keep the oil full and you should not have any problems with the newer engines bottom ends. The only exception is the lifers. Go with the mushroom lifters and your good to go.
Are you going to get the 2006 NE5 you wrote about?
Since my recent follow-up phone conversation with the Dealer, he said that the bike (a Blue 2006 Whizzer NE5) has 0.7 miles, and it comes with the Owners Manual and the Whizzer Warranty, as well as the plate that covers the bird's nest of wires protruding around the headlight that bothered me when I first saw it a week ago.
I'll buy it this coming Saturday (it will gobble up the greater portion of my Boeing Pension Check), and picking it up will be the longest 200-mile round-trip I ever made!