These mounts from Square Root Fabrication are awesome and we are happy to be able to work with them.
This mount will allow the Holley 3.5 screen to be placed in the ash tray of the square body trucks from 73-87. No cutting is needed but you will need to bend some tabs to make it close all the way. No need for a wind shield mount or cutting dashing up or anything! This is a perfect solution for your ls swapped trucks running the Holley 3.5 screen!
Works on both holley terminator x, x max and sniper screens. Also when you purchase a ecu mount with this you get 10 percent off this mount. ECU mounts are here C10 ECU Mounts.