Scotty I have a 94 mustang 5.0 with a world class t5 manual transmission. It was rebuilt about…

Scotty I have a 94 mustang 5.0 with a world class t5 manual transmission. It was rebuilt about 15,000 miles ago and even since the rebuild it whines like a supercharger under acceleration mostly in 2nd and 3rd gear. No grinding or shifting issues whatsoever. What do you think?

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