Someone else jump in if I’m wrong, but I think you have to have 31’ or newer spindles to run any disk brakes. Then you’ll still need the bearing adapters from Speedway.
I’m running some mid 70’s Ford truck rotors on mine, with 32’ spindles; I needed the 5 on 5-1/2 to run the wheels I wanted. Once you get the right spindles, you’ll have options on rotors depending on what lug spacing you want.
I'm not sure there's much you can do with a model T axle. If it was a Model A or later (28 and up) you would still need 37-48 spindles and a conversion kit to run disk brakes.
yeah i have to agree with sugar ray and big Irish.. every thing i have ever read basically says the model T axles and frames are only useful to the restorers.. not strong enough for any sort of a hot rod.
I guess it would depend on what kind of motor you are going to use. Anything other than a 4 banger, you should start from scratch.
It will be just as much work to box the whole thing than build new anyway. You could save the front and rear crossmembers from your T frame and use those on your new one.