I have the same one as Emo and it is well made and does make a difference as he says. Got mine from MX-5 City but it is showing as out of stock. Only slight downside is it makes cleaning inside the rear window a bit of a fiddle, but mine is a soft-top so no idea about PRHT.
Just from eBay.. some time back now, wasn’t expensive either.. these can be silly money if you’re not careful.. been very pleased with it and it simply replaced the smaller wind breaker and attached to the hoops (inside covers) as such rock solid. Almost plug and play..