I have a 7.5" DD a coinsearch DD and a old Sunray 5" coil(the one that is not waterproof). I amk thinking of getting a GT and I want to know if they will all work on the GT. I used the coils on the Sov2APRO that I used to have. I am pretty sure they will work on the GT but thought I would ask you what you thought. Thanks Bud,Jerry aka Tinfoil