Rebuilding a 2008/2010 engine

Intakes bolt the same. I mean Yes their different but the differences are extremely minor

I disagree. Here is what is the same in an 08 down and the 09 up 5.7:
bore
stroke
crank
rods
main caps
coil packs
rocker arms/shafts
rod and main bearings
oil pan


Different on the 09+:
intake ports and port openings
exhaust ports and port openings
valves
springs
combustion chambers
pistons
intake manifolds
timing covers
block
push rods
lifters
cam
timing chain/sprockets/phaser
chain tensioner
cam
cam bearings
valve covers
exhaust manifolds
oil pump

As you can see, lots of difference. While much of it is interchangeable, that does not mean it will work well or work at all.
For instance, you could put the 09+ or Eagle heads on the 08 short block but you will need longer push rods, 09+ 5.7 or 6.1 style intake manifold and exhaust manifilds, and your compression ratio will be in the 12.5 : 1 range. Obviously no good for pump gas.....
http://www.forabodiesonly.com/mopar/showthread.php?t=137545

Everything Map63Vette said is spot on. And as rapidtransitric noted the rod bolts need to be replaced.

Good luck with your build and dont hesitate to ask if you have any questions

C