why not put a v-8 in a gsxr 750? it isnt about hp and torque, it is about handling and cornering. Nissan designed the 240 with a 4 cylinder for a reason, to make a nimble sports car. I agree that the 240 is way underpowered, but a v-8 does not belong there.
You want to go fast in a straight line, put a v-8 in a geo or a kia. Take a shit car and make it fast, dont take a car with a purpose and ruin it. You can rock what you want. just my opinion and it was asked for. what ever death trap you wnat to build is up to you.
BTW, my 7.3L diesel swap into my 67 camaro is almost done. J/K