This is a count of Old Gens that's currently at MTA Bus as of Christmas Eve and Day, at 38:
3506, 3532, 3557, 3594 (LGA), 3613, 3639, 3661, 3665, 3668, 3670, 3675, 3677, 3682, 3695, 3698, 3700, 3708, 3710, 3712-3713, 3716, 3722, 3736 (LGA), 3743, 3745, 3748, 3751, 3752, 3753, 3754, 3756, 3759, 3760, 3761, 3762-3763, 3782
(Only 3506 and 3532 have the 2-row seating that's facing the doors)
* The underlined units are pending units that are not used/untouched without a farebox at JFK waiting for further details to retirement: 3560, 3569, 3662, 3667, 3693
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Zerega units: 3500 and 3702