just some links for you
http://www.facebook.com/note.php?note_id=118584399818
http://en.wikipedia.org/wiki/P-38_Lightning
http://www.aviation-history.com/lockheed/p38.html
http://aircraft-list.com/db/Lockheed_P-38_Lightning/49/
these state that they were able to carry and often did carry 2x 1,600lb
http://www.warbirdalley.com/p38.htm
http://www.aircraftaces.com/p38-lightning.htm
My sources. I've got this thing about 38s
Group or Squadron Histories:
“An Escort of P-38s-The 1st Fighter Group in World War 2” - John D. Mullins
“Attack & Conquer-The 8th Fighter Group in WW2” –John Stanaway & Lawrence Hickey
“The Eight Ballers: Eyes of the Fifth Air Force”-John Stanaway & Bob Rocker
“20th Fighter Group” – Ron MacKay
"Straight and Level-The story of the 33rd Photo Recon Squadron in WW2" J.B. Woodson Jr.
“The Fighting 33rd Nomads in World War 2 Volumes 1 & 2” -James E. Reed
“Cobra in the Clouds-Combat History of the 39th Fighter Squadron”-John Stanaway
“Protect & Avenge-The 49th Fighter Group in World War 2”-S.W. Furguson & William K. Pascalis
"The Only Way Home" 54th FS in the Aleutians" Robert Haynes Murray
“The 55th Fighter Group vs The Luftwaffe”-John M. Gray
“Adorimini-A History of the 82nd Fighter Group in World War 2” –Steve Blake with John Stanaway
“The 370th Fighter Group in World War 2” -Jay Jones
“The Geyser Gang-The 428th Fighter Squadron in World War 2” –John Truman Steinko
"Vampire Squadron-The saga of the 44th FS in the Southwest Pacific"-William Starke
"The 474th Fighter Group in WW2"- Isham Keller.
“Possum, Clover & Hades-The 475th Fighter Group in WW2”-John Stanaway
“The 479th Fighter Group in World War 2” - Terry Fairfield
Books on the P38 Lightning and it’s pilots
“The Lockheed P-38” – Warren Bodie
“Peter Three Eight-The Pilot’s Story” -John Stanaway
“P38 Lightning Aces of the Pacific and CBI” - John Stanaway
“P38 Lightning Aces of the ETO/MTO” - John Stanaway
“Lockheed P38 Lightning” -Steve Pace
“Lockheed P-28 Lightning” -Frederick A. Johnsen
“P-38 Lightning in World War II Color” - Jeffrey L. Ethell
“P-38 Lightning-Restoring a Classic American Warbird” –Jesse Alexander
"Forked Tailed Devil"- Martin Caiden
"Lightning Strikes" - Donald Davis
"Aces High: The Heroic Saga of America's two top-scoring Aces of WWII" - Bill Yenne
"P38 Lightning in Detail & Scale Part 1 XP-38-P38H" by Bert Kinzey
"P38 Lightning in Detail & Scale Part 2 P-38J-P38M" by Bert Kinzey
"Lockheed P38 Lightning-in USAAF, French, Italian, Chinese Nationalist Service" Arco Aircam Aviation Series #10
"Twelve to One"-5th Fighter Command Aces of the Pacific. Compiled by Tony Holmes. (This is the manual put together by 5th FC using the words of their best pilots. Includes lots of 38 drivers)
"Lockheed P-38 Lightning in Italian Service 1943-1955"-Marco Mattioli