Retrofit front parking sensors?

[mhewitt]

I've searched but can't find anything about this.

Is it possible/practical/economical to retrofit front parking sensors to a D4 that did not originally have them?

I know aftermarket is available, but would prefer stock if possible.

[sniegy]

Yes, No, No.

[mhewitt]

Yes, No, No.

Thanks, thanks, thanks.