i was just thinking about how hard it would be to make a unit more suitable for those of us with large suvs or trucks. i know the m40 has 4 units but would it be possible to build a "sending unit" around 18 or 24 inches wide that could be placed horizontally in your grill area in between the headlights to cover such a large area. i know it wouldnt be feasible to make one that large and expect it to meet everybodys needs but for the most part all cars of this size would accomodate this unit with some miner fabrication. my concern would be with how to power such a large unit and obviously the costs attributed to building it. not to mention whether it would work any better than the units with the smaller multiple heads.