I have heard/been told there is some type of check valve in the fittings at the transmission where the hard lines plug into tranny and then run up to the radiator.

I am wanting to pull the hard lines all together and just run some SS braided lines up to the radiator. But if there is a check valve at the transmission I dont think Id be able to pull the quick connect fitting there to replace it with a fitting for use with the SS line or just regular rubber lines. Does anyone know if there is a check valve there?

Also, can anyone tell me what side the hard lines are. Are they 1/4", 5/16", or what?

Thanks in advance.