Bummer, I know the feeling mine did the same bloody thing a few years ago only no block damage.
If you see anything used in the Orlando area let me know I can check it out for you. If you like a rebuild power head try Vaun at
http://www.powerheadexchange.com let him know Andrew sent you and give you a good deal and quality workmanship, I can pick it up in Tampa bring it to Orlando check with my contact (Freight between FL & NY) or crate it up for you and ship...its the most I can do for a good man ...Good luck and keep us posted..