Is it true that I can't the same type of Boge strut inserts for the front and the rear of a CQ? I forget what combination I've seen listed, but it seems as though it's Pro Gas in front and Turbo Gas in the back, or vice versa. http://www.performancemotorcars.com/auto_parts_catalog.php also lists only one Boge strut insert or each end of the CQ. Is this correct. TIA, ~ Doug