honda data

You mean Hondata? If he's only asking 350 I'd wonder what the deal is. Find out what model it is. For 350 it may be one of the old ones. Hondata ecus are goodness. I'm not knowledgeable about the differences between OBD1-2 ecus so I don't know if you can plug one in, but I don't think you can.

BTW, 160 for the MSD 6a is a mediocre price. You can buy a new one for 180 plus tax.

here are the pictures just scroll down

http://www.imagestation.com/album/?id=2103221116

Crud. I don't know enough without seeing the plugs. I just looked up that model on Hondata's website and found a picture. This may help you. I don't think it's gonna fly without rewiring.
http://www.hondata.com/techecuid.html

Oh, one last note about the MSD 6A. I purchased one used as well. My advice is to spend the extra $20 or so to get a new one. Then you have new instructions and the wires won't be cut to fit someone else's motor.

not worth it to get an OBD2 ecu. just get an OBD0-OBD1 jumper harness and find an OBD1 ecu