I can't tell from your avatar but if your truck is a short bed then you already do not have the proper wheelbase to build a good prerunner. Second off you are going to spend ridiculous amounts of money to have a custom long travel set up for your 4x4, like $6k easily. The prerunner thing is cool and I really want to build one but the cost is high and when they are only half assed they look really dumb.
As for the bushwackers... I wouldn't either. Have you ever seen them on a truck in person? On this body style you really need tires that stick out at least 5 inches to make them look right.
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The tires on this truck measure like 14 inches wide on a x12 wheel and still look dumb with the flares.