hi guys the fionce has just bought a ve v6 calais, clean as car!! she wants to modify it ie exhaust lower sound system ect for cruise for charity as i have lost my licence and will not be able to drive so she is going to modify her car so we can go my questions are what type of cat back system, what type of king springs like ssl sssl all round, and also at the back of the standard head unit is there rca outputs? or do i need to tap into the standard headunit as it runs the dual climate controll ect any info will be very helpfull thank you Some original photos have not been recovered yet.