what a toy

Hi all, can some one help clarify the differances between T30 and T32 set ups, i would like to fit T32 Sportline suspension to my T30, i belive it will lower it by 30mm, just dont know why people say it cant be done, is it the hub carrier that differs or

Not sure as to if this is the best place to post this question. Does anybody have experiance of the ISO-TOP product? Do'nt like the price (you get what you pay for?) or that it seems to be blue rather than grey, but I do like the idea of it being permanantley attached to the inside of the pop...