Do a front mount if you like a challenge
If you're going through the work to do it, make sure you get the best possible solution. Why not install a air-water intercooler? More complicated than both solutions but very efficient
I've always seen top-mounts susceptible to heat soak and not as efficient as front mounts, more like a compromise.
And in the case of the VM, the intake is on the same side as the turbo outlet, which makes it a bit more difficult.