Get your truck in a level area and measure your clearence between your tire and the top of your fender for both the front and the back. Make sure to do both sides just incase, some trucks sit level and some have a lean to them. After that you just have to decide how much you want to bring up the front end.
Go with Autospring. I went with the 2.5" kit and have been real happy. My 2006 FX4 sits nice and level. Plenty of pics in my gallery for you to look at if you want to see what it will look like!
How about performance over the long run? Is the AS a single unit on top of the strut (easy to put on, but can harm ball joints and cv boots down the road), or is it a 2 piece (more expensive and harder to install)?
Whether the kit is a one piece or a two piece design has no bearing on the wear and tear on the ball joints. The one piece kits are just easier to install.
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2001 GEN III Supercrew, 4x4, gry interior, power bench seat with lumbar support
MODS...3" Body Lift, 315/75-16 BFG AT KO's on 16x10 Eagle 102 rims, Access roll up tonneau cover, tinted windows, chrome Westin nerf bars, SVT Lightning taillights, Pro Comp ES3000 shocks, Superchips tuner, Pioneer speakers
2005 Expedition, white Eddie Bauer Edition. MODS: 305/45-22 Falkens on chrome 22x9.5 Eagle Alloy 026 wheels, 20% window tint
Whether the kit is a one piece or a two piece design has no bearing on the wear and tear on the ball joints. The one piece kits are just easier to install.
You are right on principle, but there is only so much that you can put up on top of the strut without causing problems below it. CV boots and ball joints are usually the victims when you go too high. I know of more of these problems with these spacers than with other lifts. The kits that split the lift between the spring and the strut plate do a better job of keeping the strut's range of motion with factory specs. You are right though, they cost more and are more work to install.
Pretty much everyone agrees that 2.5 inches of lift is the limit on the 04-10 F-150's. A few companies make 3 inch kits but some members have found out the hard way that these will wear out the ball joints in short order.
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2001 GEN III Supercrew, 4x4, gry interior, power bench seat with lumbar support
MODS...3" Body Lift, 315/75-16 BFG AT KO's on 16x10 Eagle 102 rims, Access roll up tonneau cover, tinted windows, chrome Westin nerf bars, SVT Lightning taillights, Pro Comp ES3000 shocks, Superchips tuner, Pioneer speakers
2005 Expedition, white Eddie Bauer Edition. MODS: 305/45-22 Falkens on chrome 22x9.5 Eagle Alloy 026 wheels, 20% window tint
The AS 2" kit is probably the one you want and a two of my friends have them installed with no issues. The one thing you might want to consider is if your'e gonna swing large tires and wheels the stock shocks are crap IMHO and eventually you will need to replace them... sooner probably than later, depending on the miles you have on your truck. I leveled my truck with Bilstein 5100 shocks (2") and it rides very, very well with Toyo MT's on it. There are other shocks that do the same thing besides Bilstein's. It just depends on if you want to do it now or later.
I just put the AS 2" in my '06. The front is about 1" higher than the rear now. The kit is great. I would stick with the 2". There are pics in my gallery for you to check out if you want.
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