How to convert grip shift 7speed shifter into 9 speed shifter!! 

Here is some serious modification of grip shift 7 speed into 9 speed shifter. Its one of kind that noone talks about it neither SHIMANO will never tell you it contain more clicks than actually has it. It doesnt cost you anything just 30min of your time and a bit skills. In 9 speed sprocket you will have to insert 3mm spacers only between some gears the rest remain 9 speed spacers. You can use 10 speed chain or 9 speed it will work on both.
Its a hardcore modification so need to be carefull when doing it due to plastic parts but once you do it it works perfectly.