Here is a 240 rubber strut mount modified for height adjustment. The mount was bored to 1.5 inch a steped coller was pressed in. The ID is threaded for a Jack screw.
The screw is 1-14TPI bored .625 ID for1.125 inch to fit over the strut. Then drill and tap for the strut threads. The top was countered bored .625 to allow access to the strut adjustment and a hex was broached in it for turning. The spring cap is pressed on the end.