Question on opening ports to Max Wedge!

I have stage VI heads on my 496 now that has all the updates and has been hand ported. No flow numbers. Has anybody opened their standard port heads to Max Wedge ports themselves? I have done a lot of porting and blending but never opened a port up that much. Would it be possible to open the port using a Max wedge intake gasket, blending the port into the chamber? Any idea who can flow these heads and how much is the average cost? Thanks Matt