Conversion procedure for LZ series VVT 3500/3900 engines:

Rotate upper and lower intake manifolds to face front of engine

Switch timing chain cover

Change camshaft and cam bearings

Install coolant return system

Install cable driven throttle body using adapter

Remove mounting lugs at bottom front of oil pan as needed to clear front crossmember

Install 3400 ICM & Coil packs

Install external crank trigger

Use saw or cut-off wheel to remove manufacturing lug from right side of block to clear header