Has anyone ever installed the pre-LCI Aftermarket Aero Kits?

[Corellian Corvette]

It seems like the quality of aftermarket parts is getting better, but still can be hit-or-miss. For bolt-on stuff, I usually don't mind giving them a try.

I see the that OEM 07-10 Aero Kit is no longer available from BMW (PN 51190413824)

However, there seem to be a lot of sellers of an aftermarket kit on Amazon, ebay, etc.

Has anyone actually installed this kit? Since it requires drilling into the bumper (as did the factory one) I'm reticent since if the parts don't fit, I'm sort of stuck. Love to hear from people that have done it.

Thanks!