i reckon allow a bit more for the ecu, probably more like 1500 and at least another 500 for tune/ setting up. I no with my setup i had to buy a vl fuel pump $200, injectors (4) $100), regulator $100, the ecu and tune/fit up was nearing $2500 and that was a base model e6x haltech still single coil etc, throttle body $50, depending on your fabrication skills at least $1000 for manifolding/ dump pipe or do it yourself, intercooler and piping $300, then things you dont think of like clutch $800 (i went overboard first time round) etc. Stocko decomp motor will take a bit. Or the alternate suck/blow through for under a grand all up, depends what you want from the car i guess.