Hey Seth, the full LPE package is $55,000.
700 Horsepower @ 5,200 RPM
740 lbs – ft of torque @ 4,600 RPM
All wheel drive or 4 wheel drive
Complete 427 CID engine and turbo package includes:
Two true ball bearing turbochargers
High efficiency air to air chargecooler
4 into 1 custom stainless exhaust manifolds
Two K&N 360 degree conical air filters
Turbocharger water feed and return hoses
Turbocharger oil feed and return hoses
Custom 7.0 L aluminum C5R block
CNC porting and polishing of LS1 cylinder heads
Billet steel connecting rods
Forged 4340 crankshaft
Forged aluminum pistons
Custom hydraulic roller camshaft
High performance valve springs
Stainless steel one piece heavy duty intake 2.02” 1.60”/ inconel exhaust valves
Three angle valve job, checking of spring tensions & heights
Computer balanced rotating assembly
Reassembly and blueprinting of engine
Properly sized fuel injectors and high capacity fuel system
Professional installation, testing and PCM recalibration
LPE's 2 year / 24,000 mile warranty
Original engine long block in exchange
Engine package installed $55,975.00
http://www.lingenfelter.com/performance427suvturbo.asp
But of course this requires and engine swap as well.