I convinced the owner of the 340 to redo the panel- it is getting an all new Garmin package with 530 and 430, plus the new Mode S transponders that display your traffic. The autopilot is being replaced as well with a new S-Tec 65. New everything!
I've spent a litlle time with the CDrom for the 530, and it seems to be a pretty capable unit- almost as good as some of the FMS's in the jets. Since his jet is all Collins, the flight instruments in the 340 are going to be too- full electric flight director and HSI to replace the old air-drive stuff.
It's going to be a very trick setup- I designed the whole thing for him, and am cutting him the new panels. I have a very competent guy doing the install locally- I'll just babysit the project. I AM installing the spoiler/air brake kits, as well as the new intercoolers myself. The aircraft will be painted when all is done- it still sports its original Cessna factory paint.
Should make for a very nice and safe to fly aircraft when it's all done. He loves that Falcon SO much, and flies it himself. If he doesn't want to fly the 340, I will.