It's definitely for a 83 but there were two choices, a 50Amp and a 60Amp. The 60Amp was a tiny bit larger if I remember correctly. They both list as a direct fit so I ordered the 60A.
Believe me, I'm as surprised as anyone on the hard lines. I soaked them in PB Blaster, hit them with a torch, smacked em with a hammer, used vice grips, etc. They won't budge. When I replaced th master cylinder, I COMPLETELY rounded the hard line there. This poor truck has had a hard life methinks.
I'm thankful for the knowledge here. I've learned a TON!