Hi im looking into buying 4 1/2" lift kit for my rear and 6" Springs for my front what else will i have to modify or change besides my brake lines for this to work, ita on a 4wd 1985 ford f 150 please reply back

U wont have any driveline problems and i was able to pull enough slack out of my brake lines to do 8 inches of lift so get the kit bolt it on, pull some slack out of the brake lines and go

Here is a pic of a solid axel swap and 8 inches of lift and drooped a little so look at the slack i pulled out of the brake lines this is what i was saying..

http://x11.putfile.com/10/30315012294.jpg

Are you getting a complete kit, or pieceing one together?

In addition to the front springs, you'll need a drop-pitman arm to correct your steering geometry after lifted. You'll need a 2-3" drop pitman arm.

You'll also need drop radius arm brackets, or extended radius arms.

You may or may not need brake lines. I had a 6" kit on my 93 without using extended brake lines, but have since switched to SS lines.