Setting aside whether it'd be 68030/68040/68060 for a while: if we want to consider an Amiga version, I'd suggest we look at the lowest spec port* rather than the higher specced PC port (itself a port from a remade Saturn version). Hence my suggestion to only look at the 32x version. Simply put, getting something on that level would already be quite the achievement on any 68K Amiga (assuming we don't go with my joke suggestion of coupling an NVIDIA 1080 to a 68040 of course
).
*) With this is I mean the 3D ports, not the 2D/tiger toy versions
