Without reading all the pages of this thread....I think the porting has only been done on intake and exhaust ports. Do the transfer ports need any enlarging ect to get more RPM out of the port jobs? Also what cutters are you guys using? Can you lay some out on a table and photograph them? On the last treatment of a port...do you hand stone the edge to get rid of burs? Does the crome liner stay ok after runing? Thanks Capt,n