[racingdwarf]

yer I would start off with say an 8.5, I've not run my boss cat brushless yet,still got brushed in it. But if you are running the same belts as it's sat in the loft with I would start off soft 8.5 10.5 ish give the 5.5 a wide birth!

Post in the vintage section as quite a few people run ZX-r's at vintage meetings so someone should very soon point you in the right direction.

Then come on down and give it a go, always glad to see new faces