Hello I’m looking to get some advice on a engine that’s going to be used for a hill climb race car,

I am planning on using (bought them already and done full studding with custom 4140 studs I made they are perfect fit.)

rx8 6 port front and rear irons.
rx7 gsles 84-85 housings
rx8 rotors wire edm cut for 2mm full hight apex seals.
rx8 e shaft
12a center iron

i will be running a T76 turbo. And hopeing for 400-600hp

the pictures are of the frame this is going in and the engine more importantly


now id like to get input on porting it, since im running high boost and my current plan is full Bridgeport. The issue is the 12a center do I do my best and just place a rx8 porting template on it and hope for the best? Just make the port the same size but not fully cut down, that way it still flows slightly.