Costa, it is impossible to buy a Stacked System, they can only be bought by Bell TV, so that option is out, which is why I did not mention it. Even if an Upconverter could be bought, he would then have to buy 57 Downconverters for use at each Tuner. The cost would be excessive.
I am also NOT aware of any 4 x 8 switch's that work and are approved by Bell TV, again, why I did not suggest this.
If these receivers are all in one location, for example a Rack, providing an Anologue Head End, the build is simple, 2, 4 way 3Ghz Splitters and 4, 16 Way Rack mounted Mutiswitch's.
It would be very clean and I could build it in a matter of an hour or so.