A bit of googling suggests that the Kodak group of filter numbers will work for the Minolta.

The actual Foma filters are not speed matched (and use double filters for the extreme grades) but, as a starting point, you could try the Multigrade suggestions for neutral density and grade from the Ilford website. If that doesn't work out, then making two exposures - one max yellow and one max magenta - will give you some sort of system which you can repeat (the infamous split-grade idea). Many people, me included, also use the Ilford under-lens filters with white light from the colour-head to print on various brands of variable-contrast paper.

Maybe the OP is still in his darkroom?