Whereas the dealer focused promotionals were previously the most important business , by the mid- 1960s a whole new market involving customizing and customizers , often linked to TV and Movie themes was driving AMT , and other model companies .
Whereas the dealer oriented promotionals were previously the lead business - by the mid- 1960s a whole new market was tapped involving customizing and customizers . 
 These were often linked to TV and Movie themes which now drove AMT , and other model companies .