Hate to prove anybody wrong but I built new shock mounts and welded them to my stock A-Arms . Thats how I got my front end so low . If the manufacture can weld that THIN metal than so can you . I dont recomend extending the stock ones, youd have to cut every weld on it ,add metal and refigure all your angles again. As for the swinger , YES it can be extended. You need to cut it evenly and add exactly the same lengths of metal to both sides , then reinforce it for added strength. If you cut it behind the shock mount you wont have to relocate the mount.You will notice a lower ride hight in the rear due to more leverage on the shock, kinda like a breaker bar effect.