Thanks for the input!

I think one of my motherboards is a 6A, but I'll have to open it to check. My 590 is a beautiful yellow (I'm gonna retrobrite it someday), but at least it has 2 MB already.

I had a thought, could I use an old internal SCSI zip or jaz drive as a hd, or would it be too slow? I am mad I missed a deal on a Supra (I think) 020 accelerator for a 500 a while back. It was only $150. I am also looking for an NTSC 1200, but I want a loaded up 500 anyway. Would love to find a 500+ board, I missed a 500+ NTSC board a long time ago for $100. I was not sure if these prices where good, so I let them go. As for the 68010, are there any compatibility problems with old games booting from floppy or is the bigger incompatibility going to be the 3.1 rom? Sorry for the rambling response, I am really pumped about getting this going! :-D