Very noticeable difference...your rear will not sway and will hook up very nice. Something Ford should have done...As for recommendations, you get what you pay for...I use HPM Motorsports and Hotpart.com...nice combo.
better built than the stock stamped steel pieces. takes the slop out of the rear. more solidly places the axle under the car. if you opt for adjustable units, you can set your pinion angle for the most benefit at the track.
I am waiting for my HPM megabites Jr's to arrive along with Steeda double adjustable uppers with the spherical bushings. should give a more harsh, positive feeling street ride but hook like mad with better tires.
if you want smoother ride quality stick with arms with urothane bushings. will be slightly harsher than stock but offer improvements in handling and takeoff.
I'd highly recommend Maximum Motorsports Standard LCA's with spherical bearings on both sides of the arm. They will never wear out while most polyurethane bushings eventually will. They are stiff, reduce wheel hop, body roll in the rear around hard corners, and keep the rear end planted on launches. IMO best suspension mod you can do. With these particular arms you can remove the quad-shocks as well (I did) since these arms make the quads extraneous.
Feel free to ask any questions, but I would recommend putting your money in MM for this one.
Wade, How is the noise (creaking, popping, squeaking) with spherical bearings as opposed to poly? Are these MMs greaseable or do you feel that is that not necessary to have grease fittings? (I swore I'd never own LCAs without grease fittings again, but maybe the ones we had were just crap or installed poorly.)
How about SFCs? If you had to choose one before the other, would it be SFCs or LCAs?
Wade, How is the noise (creaking, popping, squeaking) with spherical bearings as opposed to poly? Are these MMs greaseable or do you feel that is that not necessary to have grease fittings? (I swore I'd never own LCAs without grease fittings again, but maybe the ones we had were just crap or installed poorly.)
How about SFCs? If you had to choose one before the other, would it be SFCs or LCAs?
The only time I can hear my LCA's is when i'm in neutral going real slow over a diagnol surface (like going over a speed bump diagnolly for example). The noise is not bad at all, so don't even consider it a factor. The first 2 weeks of driving there is a little of a break in period believe it or not, so those 2 weeks you have noticable road noise increased, but most of it goes away. As long as you grease the bearings well before installing I think you will be fine.
I had Griggs SFC's put in prior to the MM LCA's and the SFC's do reduce noise from the frame and are noticable in increasing ride quality, but cornering there is no comparison to the benefits I felt from the LCA's. You need both at some point, but I'd go for the LCA's first if I could only buy one.