If you noticed my signature, have owned and cooked on 3 different Langs over the past 4 years. The short answer is yes, a charcoal basket will extend cooking times with charcoal used as the primary fuel. A full bag of charcoal would last about 3-4 hours in the Lang 48 and 60 I had.
Here's a few pics of it... http://www.bbq-brethren.com/forum/sh...50&postcount=5
Cooking at Mason-Dixon BBQ Services
Lang 84 Deluxe Kitchen known as "The Glamazon" , Custom Klose Backyard Chef... of Snot, and a 22.5 WSM
Lang 60 Mobile - The Damsel II, Lang 48 Patio - The Damsel, Bubba Keg Grill - RIP, Double Barrel Smoker and a BSKD