There is little power to be made with ignition, The intake manifold swap was a good suggestion, a head swap could help too, wanna tell us what engine your working with? its hard to help you not knowing. I might even have a few parts for you, like some p29 pistons
Get a manual steering rack, you'll be able to ditch the pump (which can suck up anywhere from 4-10 hp) and reduce weight!











