So guys..........assuming minor mods such as Intake, chip, exhaust and plugs (at the most)..........what do you think is the lifespan on the truck?

I'm planning on a solid 15-18K miles on it a year............I'm hoping it'll make it thru 5 years of payments.....cause I honestly don't ever see myself gettin' rid of it.............is this a realistic assumption?

JC