Hmmm...maybe I'm confused...or maybe you're confused, or maybe we're all confused
😉 but, yes AM2+ boards are backwards compatible with AM2 cpu's, but AM2 boards are not compatible (maybe some) with AM2+ cpu's.
He wants to put an AM2+ cpu in a AM2 board..not the other way around, and I'm sure you could run an AM2+ @1000Mhz HT, and probably not notice a FSB bottlenock,
but why even do it? and more importantly, isn't the real problem going to be with the northbridge?