Again great solution M! @ Dyo: Check out "The Vault". There are some drawings of the ones you need: http://oldskoolsuzuki.info/archives/category/the-vault/page/3 Almost at the bottom.
I'm planning to build a Harris Magnum 4 like frame myself. I'm taking Jimbo's bike as example. He gave me some pics of his beautiful bike (thanks again mate!). Perhaps anyone has some dimensions or pictures I can take some measurments from? Thanks!!!