Not from Houston, so I don't know which shops can do Pontiac stuff right.
But, just from Googling, this place might be a possibility, at least for the crank work--or not ?
http://texonmotorcenter.com/remanufa...in-houston-tx/
This rebuilder shows a decent lookin Pontiac engine build.
http://www.precisionengine.com/rebui.../thejudge.html
But, as mentioned, John Clegg has built lots of fast Pontiacs. So, you gotta believe he'd use the best shop in the area.