i recently picked up some used trd springs, not knowing that trd has two different part numbers for the xa and the xb trd springs. the guy i bought them from told me that he had them on his xa. i understand that they will fit on the xb, but will there be any adverse affects or how would the ride differ compared to having the trd xb springs? or are the trd springs the same for the xa and xb anyway but with different part numbers? any assistance would be appreciated. thanks!