Try e-mailing jojje.
Here's his webpage with contact info. He's been doing revlimiter mods for a few years now, but won't do them for those of us in the USA due to liability issues. Also, he hasn't had success getting the increased revlimiter to work on the 270 engines. Outside of a Triumph engineer, I don't think anybody else in the world knows more about our igniter boxes than him.
