For ignition, you can get Direct Hits, MSD, Crane, Accel, whatever your heart wishes. It's just a PITA to hook up ignition boxes with the funky stock coil/transistor ignition. In most cases an adapter is needed to make the tach work afterwards. The Direct Hits dealies are cool, you plug one onto each spark plug and then the plug wires onto that and run it. Easy install. They work, just not as well as a real multiple spark discharge ignition.
There's only one place you can get an ECU upgrade, so I guess it's just up to you whether you want to spend $500 to reprogram your ECU and get 15 HP out of it. The $$ to HP ratio is high there.