I'm considering tubular A arms for my Elco, when I look at what's available I don't understand such drastic variations in price. They go from 200+ to over 800 a pair. I'm not building a race or show car, just an occasional driver with balls. Also my cars odometer reads 77 thousand, but the front end only is sagging. Not the rear. How can I figure out if it's just age and wear or if a previous owner lowered it intentionally? I'm hoping it's just wear,I like stock height.