Custom New-Posts for Contributors

How can I create a custom new-post page, just for contributors, that will have only select meta boxes displayed. I have several plugins that add many boxes to the Post area that aren’t relevant to Contributors. I would like to keep the Admin Post area the same.

I’ve tried hacking new-post.php and other core files to no avail.
I don’t want to use Gravity Forms or TDO Forms. Any ideas how I can accomplish this? Thanks!