Nice find Mike. Interestingly somewhere in the past week here I read that wood stringers were sporatically used into 1984 which contradicts everything I've read in the past 10 years. I forget who posted it but is seemed credible when I read it and there is really now way to know for sure
'97 Prostar 190 - LT-1
Prior boats - 2009 X14, 2008 X14, 2005 197, 1988 Tristar 190, 1989 Prostar.