how rare is a 96 chevy silverado 5.0 4x4 5 speed.?

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im on my dads yahoo. i was talking to the guy at napa and he has never seen one like mine. and its hard to find parts for my drive-train. most of the silverado's with the 5 speeds have a 4.3 V-6. or a 5.7 v8. i have a 5.0 v8