Wagoneer SO to HO Conversion

[HakeemOlajuw000n]

I'm thinking about converting my Wagoneer with the Standard Output engine to the High Output engine once it's out of warranty.

My dealer thinks a tuner could do it, but I've noticed there's a weight difference between the two engines. Could there be other parts involved like a throttle body or headers?
Has anyone tried this conversion or have any insights on the difficulty and cost? I'd love to upgrade to the 510hp and additional torque if it's feasible.

 

[JohnEvans111]

I saw a vid that claims there are like 20 different parts setting the two apart. While I’m all for better performance, I’m not totally sold on the idea that it’s gonna give us a full 90 horsepower boost. Feels a bit too good to be true, you know?