Ly G1 absorber 
z=0.6605 gives best center to higher order Ly series
FeII1064 @ 1766.7


Lya G2 complex (approximates)
2031.7 0.671260
2032.2 0.671671
2034.3 0.673398
2036.5 0.675208
2037.2 0.675784
2038.4 0.676771