I still have a sa 200 for sale and just picked up a sae 400. It has a 4 cyl. perkins diesel ser. # makes it a 77 model Owner said it rund and welds great. I'll find out soon and post when I get it home. Would like to sell them any ideas on worth. Located in minnesota. Welder only on 200, Will throw in leads on the 400 I'll try measure them.