Im just going through the GPZ500 conversion now.
Im Soooooo close to getting my Twin on the road, But its all a bit up in the air for me at the minuet! But ill get there! Ive got the carbs fitted and I have had to make a Choke cable as needed with the Gpz carbs they are not a side lever like the original ones.
Ill let you know more about jet sizes and settings once I get the battery on so I can test ride it.