You'll probably have to weld them in for added support to the frame. You should box the frame where the new mounts will go, the 292 mounts are offset, then weld in the arms that hold the ''donut rubber mount support kit'' to the frame. The engine mounts, bolt to the engine and rests on the ''donut'' style rubber mounts for a smoother ride.
Contact Buffalo Steve ~ Inliners International advertiser who can make you the set you need, Steve at Buffalo Enterprises - phone number: (360).652.7684 Arlington, Washington 98223. He doesn't have a web site so you have to call him. If he's gone, you can't leave a message. He told me once he still has a rotary telephone. You have to keep calling until you get him. The number is: 360.654.7684. Steve IS a great guy and has lots of information/ help.
http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=22;t=002438#000002
or tom langdon
http://www.stoveboltengineco.com/acartpro/product.asp?productid=138
