i wouldnt get L19 i would get the arp +625, much better, less chance of corrosion also get crower or turbo tuff i would not get BC, im very happy with my carrillo,
also for the power your looking for the stock ecu will do fine, you shouldnt be running crazy boost or high rpms, heck my stock igniton system and ecu are holding 9k at 29psi and 400whp and at 500whp a maf is still very effective or just talk to Freon or Carbibble about the new and forthcoming SD setups for the 32bit roms
also what happened to fobia????