I just got my engine back together and i have the 6 to 2 to 1 headers but i also have the twice pipe system so i will be running duel exhaust all the way back. will give you an update on what power is like and how they work.
I live in the hills and want a car that takes the corners well. I have already install all new bushing and rubber under the car. I installed a stage 3 cam and 240z carbs on my 260z. I also got the car from my mom who got in in 1974. So the car is Real CLEAN. only 127,000 miles.
I just got my headers and twicepipe system. I hope to install it some time this month. I have the engine and trans out of the car. Installing new bearings in the engine and swaping the trans for a 5 speed. I am also installing a R200 diff. Hope this will make the car more driveable and get a little better gas milage.