Shroud length - H16

Hey all,
Quick simple question for you experts....I ordered some replacement shrouds for my '80 h16 but they appear to be 4"or 5" short. Where I ordered them did not ask the year of my h16. I now found a place that separated h16 shrouds... '71-'94 and '95-? What is the length difference between the two types? Is there a way to make the "short" ones work?

Thanks,
ttcooper
Brand new to sailing
Learning on a 1980 H16 I bought on Ebay for $500. How sweet is that.