Those are NA numbers, it's an R3 block, the rods were horribly expensive (can't pull the name out of my rear at the moment) which required custom pistons. Heads are Indy 360-2 (again if memory serves me correct) further massaged by Brian. Brian built it for nitrous which so far we haven't tried. Owner likes to do "John Force" burn outs and it sounds wicked when he has it spun up. Been messing with suspension changes/tuning and were close to getting that finalized. Biggest problem has been getting the correct converter. He had one specially built for the combo but it came apart on the 1st full power launch. The new one has done well but he thinks it's too soft off the line (needs higher stall). I told him it was time for the laughing gas and then see if the converter needs changing.