Hi Ken and All: #1. Both my "H" and "F" converts have the plywood seat back screwed to the metal crossmember. Since I have had the "F" apart most recently, I clearly remember four screws for it. I am not sure why you wouldn't find any screw holes. The board traps the rear quarter inner trim panel (the one with the arm rests) on both sides. I think the outer of the four board retaining screws may go thru both, but don't quite remember. #2 The boot cover utilizes an extruded aluminum channel that is attached to the plywood rear surface with 8 tiny countersunk head screws. It is located roughly 1 7/8 inches below the upper edge of the plywood at its centerline. Your plywood should show evidence of this for location. On the 300H this surface is vinyl covered. On the "F" it is bare black painted plywood below the channel (kind of ugly). I am not familiar with the sport 300 boot front attachment, but from what I can gather out of the parts book, all Chrysler converts used the same. They list a "large insert" channel as 2160 567 and a "small insert" one as 2410 007. I don't know the difference. My "H" and "F" are the same. Unfortunately, I have no extras. Sorry! Hope this is of some help. 300ly, Gil C. In a message dated 10/2/2007 11:40:10 PM Eastern Daylight Time, jblken@xxxxxxxxxxx writes: Anyone out there, with a F,G,H convert, provide me; 1. Details on how the rear (carpeted) plywood seat back board is attached to the cross frame structure? I find no screw holes in the metal cross structure that the board is set against- so I wonder if the backside of the board is suppose to have attached hooks, that engage the many slots in the upper cross structure piece, and just hangs in place? 2. How dose the front edge of the top boot cover attach to the top edge of the (above) plywood back board? Does it use metal snaps, on the top edge, or a horizontal alum strip similar to the 62-300 sport (and earlier non 300 converts?) converts? If the sport 300 type alum (channel shape) strip is what's used - dose some one have one to sell or an idea of a substitute? Appreciate any words of help - thanks! Ken Wilson, San Jose, Calif. 1962 300 H ************************************** See what's new at http://www.aol.com [Non-text portions of this message have been removed] To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/