[Dominik]

You might consider replacing the 4 shocks with 2 and mount them a bit further out at the lower mount. Of course, that saving only makes sense if the ones you have are long enough and you don't have to buy new ones.

I used a 100N/mm coil, which was a bit hard. I forgot the length.

Drill a hole in the center of the XJ6 bracket which connects the shock lower mounting shaft with the upright (as far up as you can) and bolt it right there.

I took a pic once, but can't find it.

And before anybody says it does not work, I can tell you that 20 years down the line with this setup "it still does not work"... ;-)

Jaguar used 4 because they had a package problem. The exhaust was routed along there.