A little more info for you guys.
In my database so far, the earliest/latest VINs are:
SRT6 Coupes: Earliest - 25366, Latest - 60452
SRT6 Roadsters: Earliest - 39172, Latest - 60387

The high/low VIN spreads (difference between production/VIN number values) from my data are: lowest - 1 apart, highest - 4,181 apart.

I'll update as I gain more data.