All Classified forums require a Site Supporter subscription. It is only $25 per year and you can buy and sell whatever you like on the forum. To become a Site Supporter, go to Your Profile and select "Paid Subscriptions."
as far as the engine mounts go idk the brand but this is what they look like. when i searched online the mounts i saw didnt have the center tube and just looked like you can swap them with either side. as you can see in the pictures of mine you cant