I'm going to say no, not enough flow in that pump for even a stock L67, you not only have to think about the Fuel required by the more powerful motor, but the L67 runs at more static fuel pressure than the stock fiero and Newton's law is in full effect (A force in motion, will stay in motion until an equal and opposite... bla bla bla you get it) for every PSI of boost in the intake manifold you'll need an equal amount of fuel pressure on the rail side just to maintain the static fuel pressure in the rail.
Edit: as far as I know the L67's fuel pressure spec is 48-55psi
------------------1986 SE 3800SC/4t65eHD (firstname.lastname@example.org) I'll Sell it if you like
1985 GT 3800SC (swap in progress)
[This message has been edited by 1fast2m4 (edited 11-10-2013).]