I have them on a 5.2L Magnum. Mine were done by Clearwater Cylinder in Florida. 2.02 intakes. Around 8K miles on them with no problems.
A local Mopar specialty shop has them here in CO
http://moparmadness.net/
And of course, Hughes has them.
Craig

2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado