My '70 Challenger R/T - VIN# JS23N0B405351 has a 702 SPD (Tuesday, July 2, 1970).

The "SEQUENCE NUMBER" per the b'cast sheet (found in passenger bucket seat back), upper left - Line 1 is 1 105086.

This "SEQUENCE NUMBER" appears to be 14,000+/- units (cars) late for a 702 scheduled car. With production wrapping up for 1970 & I'll assume units per day on a decline, how late in the model year was this car actually built?

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What month the door Mylar states should be the answer to how late in year, right?

My '70 Barracuda also from Hamtramck has 703 SPD, is sequence 1 091675 and mylar is 6-70. And is a little over 2000 units later concerning VIN sequence.

Admire the work so far thanks for the time spent men.