Hybrids appear to use a slightly different numbering system when it comes to defining the thrust capabilities of their casings. The first number still indicated the diameter (29/38/54) but the second number is the volume in cc (cubic centimeters) of NO2 for the casing. So the casing you are referring to has a N02 volume of 185cc. It's not readily apparent (at least not an easy system to me) to determine the total thrust of a hybrid casing based on this numbering system. Perhaps someone else, like one of the hybrid vendors that post here, can comment further on that.
So I was looking for that 29mm kit to go with the Sky Ripper motors, and I believe I have come up with one I will be getting:
Years ago Matt Steel owned North Coast Rocketry before Estes did, and now he owns Phoenix Rocketry. Matt has put out only three kits, and I believe one of them is a carry over during the NCR days. Any ways, the kit I have in mind for the soon to be tested 29mm system will be the Phoenix Rocketry BH-2000.
plywood fins thru the wall
29mm w/ possible airstart capabilities!!
Discount Rocketry seems to be the only US distributer of this kit. It is a little pricey at $89.00, but it is a good looking rocket.
Photo courtesy of Petes Rockets across "the Big Pond"