SOrry to bring up an old thread.
But yes, the accessories are different. The accessories mount differently on the intake. To use car accessories, you need a car INTAKE, if you goto a truck intake, then you need the truck accessories.
Yes, but swapping to stock 5.3 heads is pointless, pnp and new vlaves and they're the best stocker type head to use.
The motors are essentially all the same, except the ls1/6 is aluminum with sleeves. all of the parts interchange but some parts require more to make em work, but in the end, they will work. Since you're in Dallas, contact
www.nelsonperformance.com he's in San Antonio and he'll tune and get your PCM to work for your truck.