Denney Aerocraft Company Model 4 brochure from June of 1992 lists VNE for standard Model 4 at 125 mph, and 145 mph for the Model 4 Speedster.
There is however mention in the brochure about the Speedster having a thicker windshield for the higher airspeeds it flew at (which was advertised with a cruise of 125 and top speed of 135. fwiw, I flew that plane and can verify it actually did those numbers or more, and all on a wood 3 blade GSC prop no less!)