We finished knitting up the Siamese exhaust for the “new” project [ NOT Kawasaki ! ], but had the added benefit that we ended up with a box of odd st.st. bends ! One is spot on for the right hand pipe, so looks doable without too much aggro.
Just need a tame shotblaster person in the Midlands [ ?? ]and the guy who said he would – actually come forward and weld up the Weber manifold !