I am finally happy with my kitbashed TBU's.

I take a Heng Long DBU, and replace the IR sensor with a 38K one to make it Tamiya compatible. I then added an LED circuit to it as well, with 4 bright red LEDs, one resister and a capacitor, a little soldering and a rubber sleeve made from a bike inner tube.

I now have a low cost IR sensor with a factory look about it. Here is what it looks like. I never took progess photos as I wasn't sure it would work out or not. Now that it has, next time I do this mod I will take progress photos.

All in there is the cost of the HL sensor + about $4.00 worth of other stuff.