I would call ACC in Atlanta or Urban Cruisers.
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If he wants the best, I would ship to Slee Offroad in Colorado.
Sleeoffroad.com - Toyota SUV Off-Road Outfitters
If he's got deep pockets, get Slee do the 4.7 V-8 swap?
https://www.youtube.com/watch?v=Nz1BxAWKuL0