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Ah yes spiratone, nostalgia again. .. Bought my first darkroom daylight tank and instant processor from them, lol... I am ageing myself.

For mounting the strobe to your camera, hell no ! It will damage your DSLR.
But if you still have one of those remote flash trigger sensor, you could use them as slave strobes. Using the on camera flash as the master . You could make some test shots to find the empirical exposure setting, and then use Manual from there on.

But as far as using a non dedicated flash on camera, I wouldn't suggest it. The circuitry is different, even with the same brand but diff models.

btw, some of those older strobes may have warmed up and could now give you a pleasant skin tone , unlike the brand new flash tubes that are cold and frigid looking.

Well, if you DSLR has a bulb feature, it could work too. You know the old View Camera technique?  Set the aperture, set the shutter to T or B, with the lens cap on. Carefully remove the lens cap, trigger the flash. Close the shutter.
Of course this is done in studio or outside in low ambient lighting. We used to paint light to expose a whole building, for example.

Could be an interesting experiment for you. Use the lowest ISO of course 64

pleasure. love to see some of the results. PM me.