Airglas nose fork

I decided to keep my fathers old 182, and will put a Landis nose fork on it. Curious how much speed loss have you experienced with 8.50's on it? Has anyone done the Berringer 10" wheels and how much have you lost with those?
I was considering a tailwheel conversion, but I think with a nose fork it will be a nice companion to the cub.

Thanks

My hangar neighbor did that and claims 5 mph loss. He has a 182 Turbo

5-6 also on the 182 I’ve flown set up like that. Seems like most wide body 182s are 132-33kt airplanes unless something is screwed up. I remember 127 being the cruise with 850s