Thanks Carl I think It might be a bi tight , but maybe with a bit of creative butchering it might fit . Will have to go have another measure . From memory it was about 80mm. Maybe on a angle it could work, anyway I have a few glow engines around that would do the job . Just had another measure and its pretty tight . Does the fuz have triangle stock on the firewall and if so is your measurement including the triangle stock or not ? Gheers the pope