< I know that towards the end of the Model I production run most of my fri < interested in buying were totally avoiding the basic 4k units. They end < up with level II machines and never saw the unit before modification. I < would be kinduv interesting to know if these units were built as level I < machines or modified at the factory, or at the store. By late '79 the LII machines were the rule. Lower cost of rams and roms plus competitive drive. Also most were factory LII using the two chip LII roms or leftover three chip version. Allison