Oct 9 (Reuters) - ARM Energy Holdings said on Thursday

it has reached a final investment decision on its $2.3 billion

Mustang Express Pipeline project in the U.S., along with its

partner Pacific Investment Management Company.

ARM, an energy marketing services firm, said the project

benefits from a long-term agreement with Sempra ( SRE ) for

shipment of natural gas for its Port Arthur LNG Phase 2 project,

which recently achieved its own final investment decision.

The pipelines will have a total capacity of 2.5 billion

cubic feet per day (bcf/d) and are expected to be completed in

late 2028 or early 2029.