MARTY... I used the one piece ABS in my 54 came out really nice and easy to do...the door opening weather stripping is where I used all the cuss words... that channel was a bear! T/C Steve
DON...you need an extra set of hands my wife did all the holding of the liner and it takes a bit of time....make sure you mark out all your drill points( if any on a 41) I did all the measurements and witness marks on the wind screen with a felt marker and we hit every one....Good Luck, Steve