It's not an exact match to the p/plate, but it's very close and gives you more surface area.
A work of warning though, the A series compatable driven plate I was sold had a large centre protrusion on the flywheel side. This fouled on the heads of the cap screws which hold my flywheel onto the crank. (Only just on one corner of each one) As a result, my driven plate was prevented from clamping up 100% in the inner half of the linings. So when I was being really mean to it, (doing stand stills in 3rd gear, with people in the back seat) it would slip a bit.