Measuring chassis stats

[Output Flange]

How do you measure the following:

1. C of G height
2. Roll centre height
3. ARB lever length

?

TIA

[Output Flange]

Thanks for the info.

I'm looking to get some coilovers made for my race car, for which they want the above information amongst others. Some of it is simple to get, some isn't.

The same company made a set for a previous car of mine, but had already built some to the same spec, so had everything they needed. This time they don't.

[Output Flange]

BMW E28 535i

[Output Flange]

The choice is very limited for E28s as so few are still around. It's on Gaz now and they're rubbish, so looking to go to something better - I had Black Art Design 3-ways on a previous M3, so looking to get them to build some for this car. The problem being, they've not done them for an E28 before so need all the stats.