Bends out of the head are matched to the ports at 35mm and the bottom bends to the collector are 38mm so time to knock up some tapered headers
A simple notch to the required length was closed up with some hose clips then tacked in place before removing the clips and welded in full

Middle pipes slotted on and lower bends offered up

A bit of adjustment and they are ready for welding.
Some alloy angle held on with hose clips keeps every thing tight and in line and leaves enough of a gap so i can get a couple of tack welds on.

