I'm sorry I don't have a Charger chassis for you. I just restored a Kustom Charger myself. I use it in our rehearsal room now. I love the lows that come from it and the overall sound is fine. I play a lot of JJ Cale kinda stuff. Now this amp is a 75 Watt amp and it needs a 8 Ohm speaker, but it's loud! The big filter capacitors were leaking so i had to put some new caps in. It needed a bit of a addaptation because you just can't get them big size 2500UF/50VDC caps anymore. Be sure you fix them tight, they will get a lot of earthquake trembling. Don't throw away the bolts that come from the capacitors, these have the right size to fix your chassis to the cabinet.The pilot light was broken too. You'll need a GE335 (28 volts / 40 ma). By the way: Koos, Dutch???