Gave the bonnet a quick paint to clean it up and went for another run at willowbank. Track was insanely sticky with breakage after breakage (including my mates fd rx7 blowing the diff apart). So thought better of joining him with my s54 box, ran a 13.7 babying it off the line but picked up mph so probly a low 13 in it as is.
Have also found a writeup on converting the e153f to 2wd so need to start collecting a few parts so I can get a strong box into the car.