First time you take it in for warranty work with a broken part from beating on it there won't be a warranty.
4400 pounds? Thing weighs more than some pickups I have owned. In today's forced induction world 700 ponies ain't squat. Kawasaki 1l pushing 326 ponies. Spend some time over at the turbo forums. Guys running LS's and Windsor running in the 9's on pump gas. Spoke with several folks who made close to 4 digit power numbers with a straight from the boneyard LS truck motors using knockoff turbos.
If folks would just drop the "Mopar or no car" narrow mindset you may see some truly amazing things...
As long as its still stock it would be tough for them to deny warranty. They expect these cars to be beat on. Now if its modified then maybe able to deny.