Does anyone have any suggestions on were to start and were to buy parts for 4.8 to lq9 conversion? Thanks

 

pull old engine. swap over accessories and any other needed part to the 6.0

install new engine.

What parts are you looking for?

 

Straight up conversion? any mods?

 

Mod your tune.

 

It is a direct swap, no different then if you needed to replace your 4.8L

The only issues you'll run into is that if The 6.0 you get has a different Intake, etc you'll need to use your 4.8L one. But its all interchangeable.