I have only seen FIA's with ERA suspension components-no custom track-only parts.
Since he designed that suspension, Bob is the best one to advise you about lowering and modification. A call might be best.
If you dry-sump it, you can lower it without
oil pan fear. Jus sayin'...
Here is the G-7 information. They are actually called 'semi-treaded' tires. I think you can have them shaved into slicks but check with Krauss. These are the hot vintage race tire:
Roger Kraus Racing - Pricing
Click on 'Cobra tires' and a PDF will list the G-7's with price and specs.
I like your plans for the car.
