There is a search function on Bob's site.
I go into preferences and make it show me all posts back to the beginning. Then I use the search function in my browser.
Finding the bottoms to the window frames is tough. If you know what your are looking for you could make something up from slant window fordor window bottoms. I have extra window frames that would need extensive work to be repaired. Someone had sent their bad frames (like mine) to a plater and the plater fixed them. I used them to make copies. I bought a whole rusty body just to get the window bottoms and the door garnish molding.
I used the U channels Larry from the Cabriolet club had made up for the 68A/B. They are not dimensionally correct for the 68C, but close enough. Getting correct square U channels are not easy, they are not trivial to make. The ones he got were decent. Someone had looked into making them out of stainless, but I do not believe that happened.
The 68C is different from the A/B in that the earlier ones are screwed together and the C's are welded. I made a jig and TIG welded the pieces I got from Larry. Not very hard to do in looking back at what I did.
I have pictures of stuff but I need your regular email to send them to you.
Do you have the window stops on your door. They go on the inside face of the door near the door latch. BTW, the door latches are modified slant window fordor latches. They have an area ground out for clearance of the window frame. The chrome piece that goes at the top of the door is NOT the stop, it is decorative on the C.