The CCIC is a great product, not sure if it is as large as the HPD you show but it was the largest top mount available as a direct exchange a while back. If you wanted to go scoop then to me Barney's would be the go as it is a direct replacement, no need to hack your bonnet as you would need to do from the pic you posted. In the long run you will make up your own mind but if I were you I'd be doing a CCIC and a Barney's if you wanted a bigger scoop. Mate I have to work really hard to get my EGT over 450c now. I haven't fitted a scoop but I've been in touch with Barney and I'm on the verge of changing my mind from a long standing opinion on their actual benefits and getting one.
HPD do not generally impress me that much with some of the over priced and not very user friendly bits I've seen for the ZD30.