Make more power in B2200 EFI

Hate to bother anyone bye posting my third thread, but i want to make more than the stock 90 something horsepower, so what can i do short of putting a small block in it? I know to put in a bigger catalytic converter and a glasspack muffler, but what else can i do?

I have a cold air intake off a 91 honda on my truck, a n ew cat and magaflow muffler and it runs a hell a better now..