The A807 came in many variations. Many were sold without meters, as they were used in studios with mixing desks. The commonest standard A807 stereo (butterfly 0.75mm head) or 2 track (2mm head) came without meters, although one could have built in meters or a meter bridge at extra cost. You cannot retrofit meters into the front panel of a meterless A807, as far as I know.
I have bought an A807/II recently and have bought a cheap Tascam M208 mixer (which has VUs) to adjust and monitor the record input levels.