Any particular reason you want the 8.1L? It's a great motor but a gas hog. Especially once it's propped out. I really wanted one too when I was buying my '06 but the 340hp 5.7L is a beast with the right prop.

And a shameless plug... I've got an 06 24SSV for sale I'll sell you for way less than 40k! 306 hours... pm me a number and I'll text ya some current pics if you're interested.