Re: 97 v8 and v6 fuel tank sending units?
I have never seen a square(ish) flange on the sending unit. And the V6 fuel pressure (min of 48 psi) is higher than the V8 (max of 47), and the volume is lower. it also has a different part number, as you might expect. The V8 unit has bolts also, not a locking ring.
1998 Trans Am, LS1, Automatic, stock all the way.