[Captainfab]

Maybe a set of valve covers that aren't quite so tall. I've never had a problem with taller than stock valve covers, that did clear roller rockers. If that isn't an option, then the only other thing you can do is as tincan1966 said....move the engine to the forward holes with the '67-'71 small block motor mount brackets. You can use your existing brackets, but you will have to drill the lower holes. In moving the engine forward, you will also have to move the bellhousing (if using a manual trans) and trans forward as well as a longer driveshaft.