Another good thread with pics. Post #19 has center dash double pod.
https://forum.ih8mud.com/threads/tweeters-where.826207/
ETA: More info on that build:
https://forum.ih8mud.com/threads/pioneer-head-unit-and-cdt-audio-speaker-install.879286/
Post 77
https://forum.ih8mud.com/threads/airbagged-80-series-on-42-inches-low-cost-russian-build-thread.1199480/page-4
post 2 of this thread has some custom work:
https://forum.ih8mud.com/threads/sully-1994-fzj80-light-build.1238969/
Custom panels...
https://solvefunction.com/shop/ols/products/tweeter-mount
Door mounted tweeter mounts right by the a-pillar. Is this what you were thinking of?
Added link to better pics of this mount.
https://forum.ih8mud.com/threads/awesome-addition-to-your-80-for-the-audiophile.1286959/