They are for a Vega, pn. 2240. They have 2 1/8" primaries and a 3 1/2" collector.
The only issue I had with them was was the low profile oil pan we used. There's no interference with the pan kickout but one primary tube is very close on the right side. It's not a big deal on a drag car, it helps get the oil up to temp a little quicker, but you'll need to use a standard pan for any extended driving.