Will a 1993 one ton Chevy transfer case fit 2001 half case?

No, a 1993 one-ton Chevy transfer case will almost certainly not fit a 2001 half-ton Chevy. Even if they were both 4x4, the mounting points, output shaft size, and overall dimensions are very likely different between a heavy-duty (one-ton) and a light-duty (half-ton) truck from different model years. The transfer case is a crucial part of the drivetrain and requires a precise fit. Trying to force a mismatch could cause serious damage.