good advice. I already rebuilt my suspension.
I will change my third member with the new gear ratio (make al bearings new).
Maybe get a swaybar in the back.

I will also built subframe connectors (is that the right word). My dad and I are good in metalwork. I stiffened a Ford A 4 cylinder Frame to hold a 500 cui Cadillac Engine and it does not twist a bit and is still light (the car has 1200 kg).
I hope that the Alu heads reduce weight a bit (that I can feel it).
I don't know the right technical words but I lowered the car by screwing down the front suspension. So I put tension in it. It's bit hard to explain for me but I think you know what I mean. It's lower and harder.

The brakes work wonderful.
I thought about a alu drivetrain and third member. But that car will not make enough horsepower to notice (I think).

I write this all down to see if I am eading in the rigt direction, not to show ow smart I am

Thank you guys for your help