How much $

It's all about the same price.Some things you can't be cheap on and in my opinion porting is one of them.Save the money and get it done by a reputable porter.Flotek,Ken O'connor,wildcard are a few good choices.
 
if you want a good price with an above average turnaround time, Ken O'Conner is the man you should seek. his customer service is top notch in my book.
 
you gotta call the builders and see what you want to have done, and they'll give you a price, some of their prices may have gone up since we had ours done, and some may have found new cheaper parts suppliers and pass that on to us ????