Wow, hunting for a 9ft BG Jack is kind of a tough one! I dont really know of any 9' blank that is exactly in the same idea range of the BG Jack. There are 2 broken BG Jack's sitting against my wall, with another 2 waiting to be re-wrapped for my friend Vinh. Handling them now, i really cant think of a 9' (no more, no less) that can accurately be compared with these.
Does the blank in question need to be a 2 piece rod? If you are OK with a 1 piece rod , then a good one to look at would be a Calstar GF 900H. The blank is rated up to 80lb Mono, which puts the braided line rating at about 100lb or PE8. The Clastar GF series is a blank that transitions from an all graphite butt section towards an all E-glass section at the tip of the rod. The tip "glass" section of the 900H is only about 18inces long, making the rod very stiff while still useable. I have owned the GF800L and GF900M, but not the 900H, as it was too much rod for the striped bass i was targeting at the time. If you were to cut 2" off the tip of the 900H, i think you'd have a rod pretty close to what you are looking for; just a face ripping meat hammer! They are an excellent blank with one of the best reputations for durability in the market. I'm not sure the availability of Calstar Blanks down in AUS though, do they distribute them over there?
If you can be a little flexible on length, then the United Comp 100XXH2-J would be another one to look at. You could cut down the butt joint section maybe as much as 8-10 inches, then trim another inch (maaaaybe 2) off the tip, and you'd have a rod somewhere in the 9'6" range. *The 100 series blanks come in at somewhere between 10'4" and 10'6"*. Myself and a few others that own this blank can all tell you that it is a MONSTER of a shoreline rod. with the modifications mentioned above, it would easily be more powerful than the Patriot Design Rockfist. As an unmodified stock blank the 100XXH and the Rockfist XTX blank are extremely close in feel with the UC being a tad stiffer.
Hope this helps somehow, please let me know if you do find a 9' blank/rod that is comparable to the BG Jack, as i have a few customers who would line up for one!
Aloha!