I just posted the first of three blog entries regarding the construction of my toolbox-mounted wort pump at
www.lugwrenchbrewing.com (a collaborative blog between my brother and I). This work is based, in part, on conversations I have had with members of CAMRA, and an article in BYO. Check it out at:
http://www.lugwrenchbrewing.com/2010/02/wort-pump-in-toolbox-concept.html