Looking at the pictures you provided, i would keep that set up. What i would do with it to raise that front end, take an engine hoist and support the engine after unbolting the motor mounts. Then loosen up the front spring perch and cut an inch or two out of it, use a floor jack. After you have cut it, use the floor jack to raise the front frame, or use a friend and some 2x4's. Once you get that front end up off the ground to a decent height, weld it up. Then cut what you need too, off of the motor mount stands and weld them back into place.