Yes, you should be able to. The feeder interface for the GSMs (not Advantis or Genesis) has been the same as far back as I can remember... And we used to have a D-block machine.
We use some of the same feeders from that old D-block GSM on the GSM2s we purchased fully refurbed from Broome Engineering about a year ago. However, keep in mind that it is possible to have a Precision Pro feeder interface on a GSM or GSM2. You cannot use Precision Pro feeders on a non-Precision Pro machine.
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