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Congill, you have 22re right. If so, you have a "w" series transmission, unless you have r151f. Which is from a turbo truck. A "w" series transmission is going to have a 21 spline input on t case. Which means you'll have a 21 spline front(crawl box) to a 23 spline adapter to 23 spline MC 4.7 gears. Now a r151f turbo transmission has a 23 spline input on t case. If you have a turbo transmission, then you would be 23 spline in all t cases. Hope that clarifies things for you

Thanks sqwadoosh, any really important tips you got on doing the clutch.Sent from my iPhone using Tapatalk