The big problem with using Lou's HEI module is that you need the mechanical advance and pickup coils from an older GPZ.
Your system has electronic advance control not mechanical.
But it is possible to (according to Lou) to fit a mechanical advance unit to your bike.
I think my HEI unit is close to 10 years old now.
I may have gotten an older NOS unit from ebay.
Ignitech does look good as you can dial in your advance using a computer.
kzrider.com/forum/4-electrical/611881-19...-igniter-unit#814689
