13b four port build ideas. 12a GSLSE vs 13BT

[Whizbang]

So basically here are the three engine options, basically in order of cost (cheap to expensive). But what do you think the maximum potential would be? I could use RE manifolds for the last option, where as i would opt for something like a sidedraft and EFI Throttle body for the 1 and 2....

Engine 1;
*GSLSE rotor housings
*12a outer irons, ported
*GSLSE center iron
*9.7:1 rotors OR rx8 rotors

Engine 2:
*13bt irons
*whatever housings i can find from a s4+ 13b
*9.7:1 rotors or rx8 rotors

Engine 3:
*either RE or REW rotor housings
*either RE or REW irons
*either 9.7 or rx8 rotors.