'03 FSE 400 Need Help!

[jib4pow]

I recently purchased an FSE 400. Tested ok, ran strong, and pulled hard. Most recently it blew a head gasket and suffered a major meltdown. Took it to the local GasGas dealership where they said it needed a top and bottom rebuild. He gave me a ballpark of $2,200 and said he was figuring high. We were both shocked when the estimate came back at $4,200 with $3,500 of that being parts alone. Bottom line, the bike didn't cost me that much to begin with and I can't justify $3,500 in parts when I can buy the complete bike for that. So now I'm looking for a motor, advice, etc., or a big rock to bang my head on.