Ford keys were $75 from the dealership
Suspension Maxx 1.5" coil spacers were $80 from
www.summitracing.com
so roughly $160 gets this done.
i also got longer KYB Monomax shocks for the front which were $120 from
www.summitracing.com
i need to get the longer set for the rear too, just haven't gotten around to it....those would add another $120.
$400 for keys, spacers, and longer shocks really is not all that bad when you're essentially getting about 3" of lift in essence.
whether or not longer shocks are necessary is 100% a personal decision. i rode around with the stock shocks for about a month before i got around to installing the KYBs. it was mainly because i didn't have time to put them in when i did the keys and spacers. riding around on the stock shocks made me very happy i at least bought longer front shocks. the ride itself did not seem to change much, but over bumps and into potholes it felt like the shocks were going to blow up. the longer shocks make bumps and such a non-issue.