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Expect to pay about $6500 for the kit alone. You'd probably need an unlock d ECU.
On a big pick up,with lots of room, the install may be a lot easier than on a little Mustang.
The install supposedly takes 6-8 hours. I'd say it takes 6-8 hours the second time. I'll bet the first time, it'd be close to twice that. A lot of guys do the install themselves. If you have a mechanically inclined buddy who'd be willing to help out, you can do it.
You'll need to get it dyno tuned.