what kind of increase to expect?

My uncle was wanting to know what to expect if once he add his T-trim to his 351 EFI.

Motor will have a built bottom end, GT-40 heads, trick Flow intake, F-cam nd about 15psi from a T-trim. The car runs 8.1's at 82mph in his 82 Capri with a AODE. So he thinks he is around 290-300 ph now. What kind of increase will he get?



Thanks Brandon