Replacing Motor Mounts

Well bad news the drivers side mount is not correct for an early a body. I got the drivers side out and I tried to position the new one and I could not get it to sit right. After pulling it out I compared them. The positioning "nub" on the old one is offset slightly. That offset allows the mount to sit properly. I have looked everywhere and I can not find the right ones. I know polybushings.com has the right ones but I do NOT have 120 bucks for them. Does anybody have any suggestions. I am just about to cut a 2x4 block and mount the engine to that lol.