Opel Agila A, F12 transmission from 2003, bore for the speed sensor

This topic has already been mentioned here in the forum. It is about the compatibility of the installed transmissions. In particular the missing bore for the speed sensor from 2003. I bought an Agila year 2001 cheaply and would like to work it up as a replacement vehicle for my current Agila. My “Erstagila” is built in 2000, first possession. He has now 195,000 KM almost without repairs. It was once due a water pump. Otherwise he has oil change The clutch and the gearbox are still original. The “New Agila” probably has 110000 KM behind it. Now to my concerns: A replacement gearbox was installed. I compared the number and determined the year 2003. These are the gearboxes, where the hole to the speed sensor is “infused”! I had no idea about that at first. The speedometer was not working, probably the revometer. A “replacement speedometer” was located at the rear. In the trunk. A complaint with the seller is not possible for various reasons. The purchase price was cheap with 230 euros. I controlled the cables and was initially pleased to find a corresponding for the speed sensor. The speed sensor was missing. So I bought a new one and wanted to install it today. Unfortunately, did not fold, as bore to…. Has someone drilled up this shed to retrofit the speed sensor? How much material do you have to drill through? What is the problem? This is a stupid question at first… unless there is a way to drill without chips. I imagine that the chips will be sucked off again and again while drilling. Maybe it’s better to grind? Or is there another simple option? So without drilling. Maybe with another wiring? With the vehicles starting in 2003, the speed should be tapped via the ABS sensor. Only where? Is the old bore? Is it possible to upgrade Agilas by mid-2003? My Agila also has ABS.