After putting the wheel pants on I've been testing speeds at 2000 agl. I'm getting IAS about
160 kts at 25 squared 151 kts at 24 squared 142 kts at 23 squared 142 kts at 22 squared
152 at 25 squared
These are indicated.
So things have sped up about 15 kts with the wheel pants. But I really need to get to altitude and see what the cruise speeds are at 7,500 or 8,500 msl. I'll do that on next long trip.