No need to wonder. They do if you are talking ported 359 to a stock 361. I know Timberwolf would likely put his ported 359 against a stock 660. These are tough saws with a ton of potential.
Yeah, TW has one that he says is right on the edge. I am going for AS CLOSE AS POSSIBLE to a 372 in up to 14 inch wood. I'll work on my pictures.
Fred