I stopped by my local hardware store and they don't have it but can order it, and the gal knew what 2729 pipe was Go figure
6" 2729 pipe 10' lengths of pipe $1.60 per foot
6x6x6 wye 25.00
6x6x4 wye not available
45 degree ell 13.55
6" couplings 8.30
6x4 reducer coupling 10.95
I guess I can get the pipe from her and the fittings from Morrison. Works for me