Whatever you decide, don't cut the lead wire when it's installed. If you're not happy with the sound, Steve will exchange it in 30 days for a different spec. I'd go for the stock neck '66. Make sure it's installed to the proper height according to the instruction sheet. That has a major effect on the sound.
Sorry, Denis. I realized Steve is rewinding your pickup, not selling you one after I wrote this. Anyway, I vote for stock.