Sounds like the panasonic radio has got the wrong loom adaptor, try a new one, can them silly cheap on ebay. That or it's got some internal problems.
The trim under the headlights are known as hockey sticks and they all break like that lol. Probably largely to do with how old the plastic is and the clip design that means you can only remove them cleanly with the headlamp out. You could get them new for not a lot last time i checked, ebay again.
No easy way to smooth the bonnet, weld in a plate or apply a few layers of fibreglass and then the usual faff with filling to smooth it out. Don't forget you'll need to do the grill to match.
The rear beam is a pig to drop, worth checking the condition before you start (has it got any camber, etc), no point struggling to lower a beam you'll need to replace soon. There's at least one guide on how to do it in the guide section here.
The trim under the headlights are known as hockey sticks and they all break like that lol. Probably largely to do with how old the plastic is and the clip design that means you can only remove them cleanly with the headlamp out. You could get them new for not a lot last time i checked, ebay again.
No easy way to smooth the bonnet, weld in a plate or apply a few layers of fibreglass and then the usual faff with filling to smooth it out. Don't forget you'll need to do the grill to match.
The rear beam is a pig to drop, worth checking the condition before you start (has it got any camber, etc), no point struggling to lower a beam you'll need to replace soon. There's at least one guide on how to do it in the guide section here.