I agree thats a great filter, but the price is too high at cyberweld especially for the unit only.
It's better to buy the kit with 3 filters for less money (around $75 shipped)
http://www.automotivetoolsonline.com...it_p_9419.html a penny saved is a penny earned.
Note, the only difference between the m45, m60 and m100 kits is the inlet/outlet size whitch can be bushed to any size you need for about a dollar.