Query approved and moved

There are not too much alterations required.
First measure the length of your CBZ classic rear suspension
Secondly before purchasing Hunk GRS suspension,measure the length and check if it matches.
If it doesnt match then please dont do this alteration because it can affect your bike's stability.
If height matches exactly,then no problem.
Also check how you are going to fit the suspension
So far I know,CBZ doesnt have gas can fitted to its suspension whereas Hunk GRS has a gas can fitted.
You will have to fit this GRS suspension in inverted manner(ie gas can at the bottom) otherwise if fitted straight then possibility is that the gas can will brush against the CBZ side panels in case of potholes.