Well,
I'm a sucker for the 1st Gen models, did the same with my GS430 lease and the stereo was a pos... that was before they gave you the option to have navi and levinson combo. When I got mine, it was either Navi or the Mark L system.. the Nakamichi was terrible, just terrible for a lexus.
Still got full credit on my card, will use it for the exhaust tip and maybe a spoiler. Unless something bad happens before december, that's my near term plan.
Still got my fingers crossed.