'RO11ER' its much better then the factory stock, gear changes are quicker and you get better response. i got it installed for $650 at a locate mechanic in fairfield. though i dont recommend him. in the process of putting my clutch in i think he stuff up my radiator as when i got home it was leaking. i called up the mechanic but he wouldnt admit any fault to it. so i had to replace it myself with a second hand radiator. 'Delvance' im not too sure about the workshop. my friend got his HD clutch there so he recommended it me. i have heard that HD clutches shudder for awhile until proper break in. does shuddering damage the car?