If you’ve read anything about Porsche’s junior sports cars, the 718 Cayman and 718 Boxster, during the last year, you probably know that its mid-cycle update went well beyond the cosmetic nips and tucks typical of automobiles entering midlife. In addition to de rigueur fascia, headlight, and taillight revisions, each got new sheetmetal stampings for all fenders and both door skins. Interior upgrades included redesigned upper dashboards, new steering wheels, and revised infotainment logic with more connectivity options and device compatibility. The Boxster and Cayman also received completely retuned chassis, upgraded brakes, and even a newly shared . . .