I have a friend that wants to buy a Viper but he is 6'4". He could fit in my 2004 but his line of sight was even with the visor. He doesn't fit in my 2010 ACR at all. Does anyone know of a seat lowering kit out there that will lower the seat a maximum amount? He is considering a few other cars as well but really wants a Viper. Please help me steer him twords one instead of a Corvette , Porsche, (a fan of both)or please forgive me for even writing this, a nissan 370 . Any help would be appreciated.