i think a reasonable improvement in power delivery can be had from upgrading the fuel pump, either with e new set of internals, or a whole new pump.
yet to do it myself, its on its way in the next weeks or two, but other members report the fuel pressure stays high under heavy acceleration at lower revs..
hence creating more 'power' lower down the rev range, which is probably where you'll feel it most..
just something else to throw into your thought process...