MU's 343 comes in one configuration only. The 343s are fairly old planes, with 165 degree recline in First, and 135 degree recline in Business. MU sometimes sell the seats one class lower for long haul flights rather than upgrading the seats as they will be sold back to Airbus in a few years.
http://pic.feeyo.com/pic/20090410/2009041002014222.jpg
Here is a picture of the First Class seats.