I use to own a 240, and I did a lot of homework on that swap. And while I am fairly familiar with the costs of converting to standard sr20det hardware, I have no idea how much money it costs to get them up to the kinda power levels your talking about. I'm sure i't be less then a Z, needing only one turbo and 4 injectors and that motor is just easier to work on... but can you give me a ball park range about what these mods would cost? I'd still like to build one of those one day.