So the flange adaptor has welded itself to the output shaft on the busa engine to the point it won't allow me to remove it (even if it came off the output shaft splines would be knackered)....so I'm looking to source another as westfield don't have stock and the original manufacturer don't call back.

Anyway, point of the post - can anyone confirm the prop adaptor size used by Westfield was the "european spec" size as described here:
http://www.sprocket-adaptors.co.uk/dimensions.html ?

Unfortunately I can't get to my car in a hurry to measure and would like to order this asap, so if anyone can confirm this will work I'd very much appreciate it!

Hi Grieg
thats the one - if you have trouble getting one I have them on the shelf
regards
Andy

Cheers andy, will give you a buzz in the morning and sort it out....