Need a little whites help here

I recently got a Whites Quantum XT and I like it. I like anything simple, easier the better for me.
But it has a stock concentric coil,and I prefer DD coils. I know the machine is older,but coil tech has come along way with aftermarket coils. So,has anyone used a DD coil with one of these machines,and if so where do I get one? I'd really prefer a sharpshooter sized coil or similar. The machine is 6.59 khz from what I've read. Thanks in advance

The QXT was a very underrated White's model, plus they only sold them for 1 or 2 yrs. To my knowledge no one has made a DD coil that will work on it.