If i get a 2.5 Inch leveling kit will i be able to adjust the rear air suspension to get rid of the pre-runner rake?

in short, no. you wont get enough lift out of the rear to compensate for a 2.5" lift in front. a leveling kit would be more like 1.5". if you dont want to spend the cash for the whole lift kit, just get the 1.5" front.

I did the 1.5" leveling kit and all I did was adjust the rear air suspension to up a little bit... very easy to do with the auto level in the LE.

has anyone here have a pro comp leveling kit because i found a shop that install & align for 450-550(parts & labor included). Is this a good leveling kit and a good price?

I wouldn't do it. I think the ProComp is only Polyurethane and the "Leveling Kit" is only the front, not rear. Not worth it IMO.

thanks pop im gonna ask them for the cost if i buy the kit myself and let them install and align. and they do also modification too. this the website check it out too.

http://www.eastcoastautoworks.com/index.htm