Unless you just like to spend money, the Powermaster is way overpriced at around $270. I'm not sure what all years or models make good donors but being a low buck scrounger, I just get used ones. Many of them bolted down solid like Areostars and F series but vans, Taurus and I think Mustangs used the housing you need. Check through this link and you can kinda see the range of prices.
http://www.ebay.com/sch/i.html?_from...nator&_sacat=0