You may want to look at this post,
[url:18wpddr4]http&#58;//www&#46;hartparroliver&#46;org/phpBB2/viewtopic&#46;php?t=4058[/url:18wpddr4]
A Saginaw in good condition may be hard to find, I would check your current unit and if it is closed center and if it is, try to trade or find an open center unit.