Thanks, Jim, also James ( by email with pics),
It came out by disconnecting the flexible downpipe, but only by the skin of its teeth. I really didn’t want to get involved with manifold studs!
Cost of refurb is about half cost of high-torque replacement so it makes sense to replace. Have ordered a Eurolec one, recommended by a local source of knowledge. Will keep the solenoid.
Good to have your advice that it works for an SP.
Thanks again,
Graham