kf audio.. i think they've done tons of 7998s.. top notch experience.. workmanship & price? u have to explore abit.. not in a position to comment.. ha ha
.. have not tried their services, can't give u any indication of $$.. no vested interest either.. my opinion is just based on industry knowledge, they r quite well versed with alpine stuffs.. for details PM zenn
I'm looking for any CT9A model stock suspension. Cant tahan my Buddyclub Race Spec Damper. Too hard for my daily driving haha. Wanna swap also can. PM me or contact me at 0123602861