I just found out I need $300-400 adjustable upper control arms to properly set the Caster on my Jeep to take out the "flighty" feeling. The factory arms are non-adjustable, and we put on big enough tires that we are out of spec. SO. I found a pic of some, and it seems to me that with my lathe and welder, I could do something like this for probably 1/4 the cost.
Wondering if others have built any "critical" parts like these and any advice, or is it really worth it to buy Official aftermarket: