Here are some important questions.

How is your truck lowered?
What stock parts were removed (if any) when it was?
What stock parts are needed with the lift?
Do you still have them?

Just don't want to see you spend a ton of money on a lift, and find out you can't use it. Or have to buy a bunch of additional parts that were replaced when it was lowered.

 

A 2wd with 6" is probably like a 4wd with a 4" lift. I have a 99 4.6 2wd. I am thinking about a 3" spindle, 1" rear block, 3" body lift,18" rockstars, and 35" mud grapplers. Now does anyone know if you can put a level kit on a spindle lift? Or how to get it from 3" to 5"??
BTW, 2k is good, the tires will eat a lot of it tho, I'm still saving.

 

Being a 2wd V6 Id just do a 3 inch BL and 35s.. maybe 33s if you think your engine will have trouble with 35s.. Im not really sure cause ive never drove a V6 F150..

 

I've got an 02 4.2L V6 and I have 265/75/16 on it 2wd auto no lift or level yet lol. Level is what I am goin do but anyway the tire I have I think are right round 31 and If I am on a slight slope or even sometimes flat ground they chirp a bit I dont mean too lol. My motor turns em no prob. But when I get new tires I'm goin 285/75/16 I think that is almost 33 also they are maxxis mudders now and what I am getting again great tire IMO. Hope this is a bit of help for ya to decide if ya want 33 or 35 tires. Also the maxxis cost me bout 600 new.