I should have mentioned the Plain Jane ROM that's 2.1 stock. If it's not too late, check it out.
http://androidforums.com/all-things-root-eris/115419-rom-plainjanet2-stock-2-1-oc-a2sd.html
http://androidforums.com/all-things-root-eris/115419-rom-plainjanet2-stock-2-1-oc-a2sd.html