I had the Tamiya MFU in my Tamiya Scania and when bought the vekerk grill and sunblind lights and changed the rear light clusters on the truck for eurostyle ones I changed the MFU for a servonaught system, using a M24 to drive the truck which also incorporates light control via the TX and a SM3 sound modual to make the relavant noises, I mounted the speaker in the roof of the truck to get it out of the way and it does not detract from the sound output
