You might want to keep that tongue leashed some, these are the folks on this site that will be helping you when something is wrong with your car in the future

These guys know what they are talking about, so i would not take the advice for granted.
The stealership will have zero advice to actually getting the 5.0 to fit, ya know flipping and trimming the oem motor mounts, cutting the crossmember and adding a certain motor mount to make the 6 speed auto work, or the certain oil pan that fits and you dont have to modify to make the 5.0 fit. Simple stuff like how to get rid of the anti start system on the 5.0 computer, getting rid of air bags and abs systems turned off on the 5.0 pcm and still retaining the oem computer to handle all the body module *****
Guess you dont need our help here.
www.cars.com you should find a good one there. GLWP