get on ebay mate, infact, i can txt the guy I sold the red ones to if ya want, I made all the fitmets up for him so they will just drop in he didnt want them anymore, its a trek for ya tho! lol.
let me know, id try ebay and piston heads first tho, ur sure 2 get a bargin , people seelin allsorts these days!
You'll be fine then Mine are rather snug and I'm hardly a porker - if you could get to say a GPR showroom etc and give some a try then that could save you a few quid.