Robbins is the best top on the market, but I don't know if anybody has the correct rear curtain glass. We had somebody remake our rear curtain with the glass that was replaced in the 1970s.
I had to send my glass to the top people to get it right. They said they didn't have a pattern. Told them to use my glass and make a pattern, don't know if they did. Check with EZ Top in Greenville and see if they have it.
Since I didn't go original don't know about the grain pattern, but would guess they have the right stuff.
IF you have the correct rear glass save it to get rear curtain made