i am building a Hog Bipe.. i love this plane.... i have both wings completed and am fixin to start on fusalage.. i am going to outfit it with an o.s. 91 4 stroke... the plans say to not use the motor mounts provided if using a motor bigger than .80???? what is the best type/brand of mounts to use... or are the fiberglass ones in the kit ok???

I put a Saito .91 in mine and used the dubro anti-vibration mount.

Bob

I'd follow Sig's recommendation and use a 1-piece mount. Their 2-piece mount is good, but designed for .61 2-strokes.
I've also had years of service with the .91 Surpass and the GreatPlanes adjustable 2-piece mount.