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[quote="jarndice"] You will need an "ELMOD" MFU which is a direct swap for the original board and is specific to the WSN/TORRO Half Track to run the speakers but the Elmod board is a worthy addition to the vehicle with a brilliant programmable sound card.
Model builder, your idea is a brilliant solution to this, however, I would quite like to keep the half-track as an M16, rather than an M3 with a quad gun trailer. But if I cant find a trailer, I will most likely take that route.