Excellent upgrade idea! Consider swapping out the heavy steel linkage arm at the same time
I got quite a few aluminium swing arms here waiting to be cleaned up and sold - see photo below. If no-one else comes to your aid then send me a PM and I am sure we can work something out.
Woah, cheers Brian! I may take you up on that offer! If nothings cropped up by end of the month, i'll add an alloy swingarm to another order of bits I need from you!