My GF has a '59 ford Fairlane with a 223 Inline 6. I've tuned it up, rebuilt the carb, changed the intake and exhaust manifold gasket, new plugs, coil, points condensor... all of it and it's still a dog. Compression seems to be fine. I'm glad it's big and stuff so she doesn't get hurt, but I want her to be able to keep up with the pack and not get run over by a semi. Anybody know if a Y-block is a direct swap with the motor mounts? How about a 289? 300 inline? I'm not a ford guy by any means so a little advice on this topic would be great.