I've just redrawn the tiger wishbones so I can start to fabricate some, whilst I was checking dimensions of the lower wishbone to hub carrier there is a dim of 100 mm between bush tubes and Also 100mm width of hub carrier, so what about the thickness of bush?

The crush tube bolts solid against the hub carrier, the bush then fits around it. The outer tube on the wishbone should be slightly smaller to fit the 'brim' of the top hat.

So 100mm carrier and 100mm between tubes sounds correct to me, as long as they're referring to the crush tubes.

The dim is the outside bush tube , not the crush tube

These are the bushes for the bottom wishbones.

http://www.tigerracing.com/zencart/index.php?main_page=product_info&cPath=60&products_id=218

In the new edition of the book it shows the top hat type bushes on page 95 which is confusing me, I've adjusted the distance between the bush tubes to allow an extra 9 mm for the top hats