We just had a full AEV build done with the 5.7VVT Hemi on a brand new 2011 Mango Tango Unlimited Rubicon done. It was $19,500 for the motor swap using all brand new parts. It only had 40 miles on the Jeep when it was tore down. It runs great and the best part is the gas mileage is the same as the 3.8 chipmunk powered V6, both on 35" tires.
You can do it yourself for 9k-15k, depending on if you use used parts or new. To have it done, your going to be close to 20k, give or take. It's not a hard swap IF you have the tools and the equipment to do it, not to mention the time with family and work.
I would tell anyone that is thinking of it and has the funds to go for it. I was blown away when I drove it compared to my 08 JK. The 6.4 is about 5-7k more. I drove that too, a demo....thats just nuts. It's like driving a corvette...until you turn anyway.
Everything works perfectly with the AEV stuff. It's just like factory in every way. Burnsville and AEV are similar in price. Can't say who is better.
oh...and dont forget you get to sell the motor and trans, plus all the parts that you pull out. That drops the figure.
2008 Black Rubicon Unlimited, fully loaded, Auto
AEV Premium Lift with High Steer
35x12.5/R17 Goodyear MTR Tires
AEV Argent Pintlers
AEV front bumper with Superwinch EPI9000