Changed to a 2.5" front spring as the 2 1/4" was very close to the thread, also dropped to an 8" long spring as the 10.5 was wound right down on the adjuster.
I wasn't happy with how much space I'd left myself with the first evolution of the manifold so cut it all up and started again.
Looks much more fancy!
Just need to weld this one up and tee off for the wastegate.
Anyone clued up on rear mounting batteries? I haven't got room for it at the front now, I'm sure I read somewhere about using the cabling from a BMW as they're generally all rear mounted..