Gatos had 5 major bow limber patterns but the Revell 1:72 kit only supplies one.

AMP has designed a set to offer the patterns and the interior reinforcing frames. We are taking “Expressions of Interest” to determine production. This will be a LIMITED RUN ONLY. If you are interested, please see full info here:

http://amp.rokket.biz/am_1_72_gato_sets.shtml#usn-gato-bowlimber-072

There is also a short PDF on the patterns.

Thanks. Now I'm going to have to obsess over which doors mine had. In the only close up photos I have managed to find, it appears they were removed, but look to be the angular type based on the portion of the bow just forward of the doors.
That last set of bow limbers on the PE fret look like what I need, except I'll need to drill three more small round holes under the next large limber hole.
Maybe I should have stuck to armor.