I'd like to raise the back front end to match the front on my F150, 2005. FX4. Possible to do you're self, is it easy/hard to do it, cost a lot to get this done?

 

You best option is a level kit. This kit contains spacers that go on top of the strut, and a taller rear block that replaces the current rear block.

Pros: Cheap, easy way to lift it 3" or less
Cons: The spacers cause the the front struts to be at a angle where it can wear down the CV joints faster, could cause upper control arm rubbing against strut, and a stiffer ride.

If you dont like the cons, get a suspension lift.

 

Your question is a bit confusing as it seems like you may have a front spacer already and your back end is down a bit compared to the leveled front. If that is the case then you either add a block to the rear, an add a lead, or a helper spring to get it back up. If not then you need too follow what Blackedout said and add the front spacer to the top of the strut.

Either way its fairly easy to do as long as you have some basic tools and mechanical knowledge.

 

Leveling kit is what you are looking for.

 

I have no clue what you are asking

if you want to raise the front: leveling kit as stated. you want a 2.5" to get level (this is assuming you are completely stock on suspension.

If you want to raise the back to match the front (if you already have a leveling kit) get a lift shackle, AAL, or larger rear block.