I did this swap in my 182. I say “I” but actually got the guys at birchdown to sort when it went in for a service. Bought the gearknob and gear leaver as a complete assembly off eBay (rather than just the gearknob). The swap was like for like, except from the gaiter, and I’m fairly confident that the ph1 and ph2 gearstick are the same length, I certainly didn’t notice any difference. From memory before the swap the gearstick always felt about an inch or two too far away from ideal (if I’m being really picky) and after the switch it’s still that same little bit of a stretch away.