JRA2000TL

Are these amp problems found in the 13 and up models also? The part # for mine, according to the Lexus catalog, is 86280-0W860. I know they changed them slightly for the 13 model year. I see they're more prevalent in the 07-12s. $4,536.50 MRSP, LOL. Discounted at the dealer is $3,381.95. Do they honestly think they're going to sell these new ones? I'd take the $750 repair from United Radio a couple times over before I spent that! Just needing to know if I have to set aside another grand or so if that happens.