If your going to install the top mount. My measurements would probably work for you. My mounts are in original locations. Provided you used the shocks I have. Did you say yours is two inches lower than mine?. Is yours bagged?

This is a before and after picture when I lowered it.
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Jeff
1964 Chevrolet K10 Fleetside
"A Kid's First Truck"
Follow in the DITY
1951 Chevrolet 3100
Follow his build in the Project Journals
1969 Chevrolet Camaro Convertible | 2020 Chevrolet Silverado | 3500 Duramax | 2021 GMC Sierra Denali
USAF Veteran 1983-1987 | PSP retired 1990- 2012