Hi! Please help. If I know what kind of Coil Spring and Rear Leafs I have to order from Eaton, I will be happy. How much + or - comparing standard. I love this.👍 https://www.tradeuniquecars.com.au/readers-rides/1808/1963-studebaker-avanti-supercharged-r2-reader-ride Owner says "couple of inces" lower. Both Front and Rear 2 inces or...? Eaton / Avanti 1963 Choices: https://www.eatondetroitspring.com/db/es-partsinquiry2.php?syear=1963&smake=Studebaker&smodel=Avanti&am