>The small square pop-tops were only used until '67.

This is not true.  I have a Westfalia catalog that shows the small
square pop-top on a '68-'71.  They may have only been available in
Europe.

 -----------------------------------------------------------------------
* 59 Dbl Dr Walk-Thru Panel		     Dave Easterwood		*
* 59 & 61 Single Cab Pickups		     deasterw@st6000.sct.edu	*
* 66 Westfalia								*
* 66 Hardtop & Sunroof Deluxe Buses	     61 Deluxe Beetle		*
* 73 & 77 Westfalias			     69 Rust Bug		*
* 74 Thing				     64 Type 34 Karmann Ghia	*
 -----------------------------------------------------------------------