There is a Haz 3 band clone out there for sale on the FB, but the builder is based in Russia and my experience so far is that you wouldn't need to be in a hurry to receive it...
ATK is the ultimate Stingray killer so I'd be aiming more for a 'ray type pre myself. John East does a 4 knob Stingray replacement pre but with a sweepable mid. https://www.east-uk.com/product/mmsr-4-knob-3-band/?v=79cba1185463
Reminds me... I have an ATK700 in bits in the cupboard that I should resurrect...