You can use any cam for this purpose. The ones we use as rear cams would just do fine. Power it via a switch so that it doesn't stay on all the time. Whenever you need to see the feed from the front cam just turn the switch on and the feed should be available on your screen. In rear installations, the same is achieved by powering the cam from the reverse light line. As the reverse gear is engaged, the reveres light line gets power and lights up the light as well as powers the cam too and hence we see the feed from the cam.