overflow

I'd like to bolt a bottle style overflow reservoir to the side of the radiator and eliminate the tank behind the engine. Looking for ideas of what you guys have come up with.

First off some history. I purchased the bike and rode for about 20 minutes, on my way home, before it heated up. I stopped and checked it. Oil was boiling, because of all the coolant in it. The previous owner, admittedly not mechanically inclined, had put jb weld in the weep hole to "fix" the...

Preferably in Australia?! Mine has a crack and I guess that means it's useless! Found a few on ebay from America but they are like $50 postage. Let me know! Thanks