as for the headers.....they were left over from the previous 446.
they were in decent shape, and werent going to get changed unless the car wouldnt run the number.....which only needed to be a 10.0X in summer air.
the car isnt legal for 9's, and the owner doesnt really have any plans to cross that line.
he would just get a different car and put this motor in it if he wanted to run in the 9's(or quicker).
other than the 6 pak style hood, its an all steel Dart with full interior and stock seats. roll bar, Dana, and the owner is probably around 300lbs.

when he was talking to ATI about the converter, my choice would have been a 9". they assured him they could get an 8" tight enough, and that the efficiency would be better.
the target stall speed was 4800-5000. it flashes 5400. its been back once, still flashes 5400.....and now they say its basically as tight as they can make it.
the good news is......it doesnt slip much on the top end......and it leaves great.
typical summer ET's are mid-9.80's(the local track isnt much of a stickler for having to have the right paperwork/equipment to run in the 9's).
as i recall, speed is in the high 133/mid-134 range during the summer months.
60' times are usually around 1.31.

best ET was a 9.66 this fall, 137mph and its gone 1.29 60' a few times.
also....3 wins this season