We absolutely hammered Swansea early in the 86 Welsh Cup run; IIRC 4-1 at home ; ex Spurs/Man City Tommy Hutchinson was player manager and he commented they were lucky it wasnt 10-1!! We knocked out Shrewsbury, Newport and Hereford that year ( their first teams were out too....the taffs had a Cup Winners' Cup place in Europe up for grabs so it was important to them!!)
We then played them at the Vetch Field a few years later in the Welsh Cup Final and lost 5-0....I recall ex Man U m/f Alan Davies had a blindeer for them....but had we won I doubt we'd have got out alive!!
I remember it well. And although it was a great run, the irony is we beat then-Championship (in modern day terms anyway) Shrewsbury, then-League One Newport and Swansea, but lost to fourth tier Wrexham!