L16-
bore it or stroke it.... than peanut head...... than port and polish.... than bigger valves...... than find someone selling a sweet high flow intake, cannon used to make some sweet ones.... than headers.... knife edge your crank.... better oil pump.... electronic ignition..... dish pistons or dome or flat depending on what kind of compression you want.... get yourself a gangster ass cam.... lighten the fly wheel...... electric fans..... nice exhaust..... keep it cool with a good radiator.