While several shops can CNC port them, I prefer to deal w/ Dwayne Porter just b/c he's a good guy and can set you up w/ whatever else you'll need too. Especially in the valvetrain department. I doubt there's anyone better at spec'ing cams for these mopar builds.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax