I currently have a 73' 240z that I bought with a chevy 350 already swapped in. Currently this car is my daily driver and I'm looking for another engine to swap In. I think I have decided that i should either get the LS3 or the 2jz. I'm looking for about 400+ horsepower and I would like this car to be somewhat smooth and daily drive-able. I have about 12k to spend on the whole swap including the tranny and all the extra accessory pieces needed. I probably won't autocross or drag this car and it will just remain as a street machine. What setup do you guys thing would be best?