Excellent contact sir !!!
http://www.rapidelectronics.co.uk/rk...1910&XPAGENO=1 The Varta Rep, found a huge 20Ahr one for me which is used on Harley's of all things (couldnt help but laugh after the HD April fools joke on here).
But its 20mm wider than the OEM and almost touches the rocker box cover.
However, if its of use to anyone the Yuasa Code is Y50-N18L-A