[Dominik]

Good day!

Shamrock not in business anymore. There is a local chap (in Cape Town), Eli, who services them. I don't have contact details.

You won't be wrong in using Jaguar XJ6 front and rear axle settings - which I don't have in my head.

Try slight toe-in in front and rear, 3/4 deg camber in the rear and 0,5 deg in the front.
Caster 2.5 to 3 deg.

Look out for bump steer (in the front). There were known for that.