Regarding the speaker grilles: They had the period look I was seeking. The speakers are german 356 repros that came from NLA with the grilles.. The sound is clear without distortion and that's what I was seeking for top down or windows open driving. They seem to be able to take the 45W per channel from the amp ok. I have pretty decent sound with the top down at speed. It's by no means a high end sound, but very functional. The size of the original speakers (using B & C speakers front and rear) are odd, but new high end speakers can be made to adapt to the 356 hole and still use the grilles. I copied a discussion on the 356 Registry forum on what size speakers will fit the B & C mounts. When and if I need to replace these speakers I will upgrade to some 3 ways.
The left preset is a switch to turn the radio to AM and also serves as my 1 AM preset. The other 4 presets are FM. That's how I had Greg set up the old three way function radio buttons. There is a toggle on the back left side of the unit for switching the unit from radio to pure amp to power the aux. input for iPod, MP3, Sat., etc. Speaker balance is adjusted by selecting an FM preset, then spin the dial off the right side, when the (preset) station comes back in the left knob adjusts F/R and the right knob adjusts L/r. Hitting the preset again brings the radio knobs back to normal funtion. I can adjust bass/treble by doing the same thing, except by going to the far left of the dial. The dial is an original german 356 unit and so the stations are lined up in the opposite way as US units. (So FM 104 is on the far left). The old FM freqs only went up to 104. My dial works in the US direction and so although the dial is moving as I tune in a station, I have no visual indicator of where it is because the indicator is moving in the opposite direction of the visual marks. It works like a charm though and I can tune in all the FM stations (107.9) (and use 4 presets for my favorites).
I have my AC power outlet mounted under the dash to the left of the radio. iPod has an a/c cord to power/recharge the iPod. The iPod is connected to the radio/amp by a small RCA cord (headphones to aux input o the left rear of my radio.
Greg will explain your options. He is a good guy and seems to get a lot of business. (Plus he is affordable)