Hi guys,
I made this change when I was building my Unique. It came with the Moss Motorsports upgrades but I wanted tubular A-arms, Coilovers and the rack & pinion steering gear. The folks at Unique sold me the complete unit and since it was a Unique chassis it was a bolt in replacement. I sold the MG unit to a guy in Salinas. The unit from Unique included spindles, brakes, SS brake lines, shocks, coilovers etc. etc.
Talk to the Weavers and see what they can do, in your situation you would be welding the unit in or welding plates, drill holes and then bolt the Weavers front end onto your chassis. It is a well built and sorted out front end installed on many high performance Cobras.
Here is a pic at Sears Point, I do not have any close ups of the actual parts.
Tony R.