Its a 97 f250 7.3 obsThe early 7.3s don’t have the fine mesh screen in the tank. The super duty 7.3s have 2 mesh screens inside the pickup assembly.
I believe dorman has come out with a selector valve that actually fits and is a little less than the ridiculously expensive OEM unit. Haven’t tried it so can’t vouch for it.
Another option is to ditch the selector and front tank and put in a 38 gallon rear tank.