If anyone can answer my question about the high pressure fuel pumps that are on the valve covers. If there’s any other Lexus models fuel pumps that will work on the ls I seen cheaper fuel pumps for the is350 that looks identical to the ls460

 

Nope. The regulator (internal), solenoid (internal) and dampener are different.

 

No it's LS460 only, make sure it's the right version as well.