Well, I got my A500+ motherboard today, and have changed out the guts on my A500. I am pleased to say, I now have an A500+, with a GVP A500 HD8, with 8mb fast RAM, and 1.5mb chip RAM, and a Mechware SCSI card reader for a HD with a 2 gb compact flash card. I installed ClassicWB 68K, and it works great.
The only problem I ran into, was that for some reason, it doesn't like the CF card to be formatted with SFS. I had to use FFS. I am not sure why that is, but other than that, it works fine.