I found the front door speakers to be one-way four ohm speakers, roughly 5.25" size. The rear doors were two-way eight ohm jobbies, closer to 6.5" (more like 6";-) The LF had a break at the wire from the terminal to the voice coil, I resoldered it and we're now good to go. The LR had a big tear in the cone, so I replaced both rears with some old Sony 5.25" one-ways with wizzer tweeters. Sounds fine. I think the balance might be off between the rear tweeters and woofers, but the front's more important in that regard anyway...

I'm calling it done for now, though if anyone reads my other thread about using 8Ohm replacement woofers (likely from home stereo speakers), I'd be interested in hearing about it.
--
Kyle
Santa Rosa, CA

1980 242GT 198K
1990 744Ti 115K
1972 Riviera 130K
1972 240Z 1K (since restoration)
1972 Datsun Pickup 87K(187K?)