Hi again
Your cabinets are worth saving and spending money on. Particle board is preferred over plywood, as its sonic qualities are better, and if it was plywood, that would date it to the 1950s up until the early 60s. I have looked over all my saved paper on the C36 C38 models, and found the following:
1- I have one example of someone else loading the LE-15 (close to the D130 load) - LE85 - LX5 setup, which could be optioned from JBL in a C50 C51 Apollo, or D50SM speaker. I have never seen your combo in any other C36 or C38. If someone loaded a C38 this way, they did it after the factory, as it doesn't show up as standard issue. See this interesting C38 example showing an LE15 LE85 LX5 setup on ebay a few years ago. This was the only other one I have ever seen
https://jpegbay.com/gallery/008154741-.html#1
2- Factory shipped C38 setups show as either 001 030 032 S6 S7 S8 S12 but none of these include the D130 and LE85 combo, which is usually furnished as the 001 setup with D130 LE175 N1200 crossover. These are the premium versions on ebay, and rightfully so. The 030 setup with D130 075 N2400 is a shrieking POS with the bullet tweeter. They could be torture devices in my opinion. I looked over my 1962 - 1970 catalogs to compile a list of options, and can't find yours as factory issue.
Some JBL paper shows the S8 system option, but its never been seen by me, and I don't know if one was ever made that way? I haven't seen it personally, and wonder if was a catalog misprint.
3- What is your ohm rating on the 130 woofer? Probably 16 ohm, if so get a N1200 crossover or a 3110.
If you have an 8ohm woofer, best bet is a 3110A crossover. I have extra 3110A's I was going to sell soon. I think an 8ohm LE15 will actually fit in there, but all the factory paper says this woofer needs a 3 cubic foot cabinet to work properly. The 2235 is really the king of the 15 inch HIFI woofers, and I can't recall trying to fit it in a C38 enclosure. It may be a little bigger than the LE15 on the frame Outer Diameter, and require a larger hole?
4- I tested a good D130 vs a good LE-15 and prefer the LE-15 by a bunch, its worth switching to.
I would by all means keep the LE-85's but if you want to sell them, I would be interested.
So if you want to keep these, part out your D130's and LX5's and get matches for your LE-85 drivers
Don