Z28-50

Car is 1995 Camaro. Koni single adjustable yellow Koni's, Strano springs.

I want to modify the lower spring seat on the front shocks for use with a threaded shock sleeve to give me some ride height adjustment.
Before I ruin one of the Koni seats I want to buy 2 spares.

Anyone know if the Koni spring seat is the same dimensions as an OEM spring seat?

If they are Koni specific do you know the Koni part number?

Anyone have any have any laying around?

Thanks,
Charlie DeBolt