I'm shocked MP no longer offers the housing & pump.That's I have ever used!
Sorry to be the bearer of bad news. I believe they still sell the 8 blade aluminum pump, but the MP housing has been gone for awhile now.
I feel the old housing was overpriced at 150-160-something, but it had something going for it...it was cast and machined in California at Buddy Bar, and as far as I know it was the only domestic sourced new housing out there. Why was that never publicized? Too late now.
There's more, but I'll stop before saying something I will regret.
It's all water under the bridge and I've moved on to better things, but I swear I could write a book about my time there which would probably strir up all kinds of emotions LOL