I have bowflex revolution and I have made some alterations to it to assist my regular workout.?

I put some heavy duty pulleys through the base of it so i could do squats on it. My problem now is I would like to get a squat vest for it that is NOT weighted and has clasps at the bottom of it for the machines cables to hook to. Does anyone know where I could find one?

Bowflex Revolution Main Engine Assembly Replacement Stabilizer use for 3 models