I got the single din as this fits from my lexus double din size to convert to a single din which fits a standard H.U, but i do have to manually snip the amp cable for this to work as autoleads don't yet do the lead for the lexus SE or the Sport which is a shame.
Was quite cheap to about £8.95 and the facia was about £19:99 + P&P.
Iv'e never noticed the suface of the adaptor but it looks fine to me, but the facia can fit two stereos or the double din H.U or you can just fit a standard H.U and use the lower part of the facia as storage you maybe able to fit a pen in there lol.
The surface on that adapter looks rough to touch, not smooth like the Lexus dash, how do they look together?