Thanks Dave. I make most of the bits at the local Men's Shed. They have a good machine shop. Bespoke machining at commercial shops is a bit pricey compared to off-the-shelf items.
Had a bit of a breakthrough on the steering today so starting to come together... perseverance is often the answer.
Interesting that the 4-link Panhard set-up I've just completed ran a similar timeline to yours.
PS. After-market LSx rocker rcovers are taller than standard. Don't get caught out on clearances.