5SFE is a single cam, the camshafts from a 3SGTE will not work, they are for a twin cam. You could in a 3SGTE head, but you will need a stand alone to run it. Speaking of which, I have one for sale

The 5sfe head is strong, but as far as flow, it is not too good. There are a few companies out there that make cams for it, but why bother.