Porting E7tE

I am planning on porting a set of E7's and adding GT40 1.94/1.60 valves. I have access to a valve grinder and plan on doing all the porting and polishing myself. I want to know from people who have done this what their flow rates where and the combos and results either hp or 1/4 mile times. if anyone who has done this or any machinists that would have an idea on the cost to cut the heads for the valves and install the seats only as I plan on taking care of the unshrouding and blending. I also welcome any words of wisdom for the port work. I have several sources including mouse's diy porting and the article on the corral but welcome any other help. Please I am well aware of the fact that these heads suck and that aluminum heads are the way to go but I don't have the cash or interest and prefer to gain some experience in porting....and yes I will flow them when finished to make sure they are balanced.

Thanks All!!

E6-E7 difference

I am not sure of the difference between the E6's and E7's. I have considered the gt40 1.85/1.55 valves but figured that if I am going to pay to have them cut I may as well go all the way. Tri state cylinder head in Indy said the will hog out the bowls and insert the seats for 250 a set. Surely there is someone on this forum that has done this before??

Thanks