Gearhead6s

the harness with my bank to bank FAST system is supposed to be for the LT1 with optispark. the part number on it is 30-C001. is that right? the reason i ask is that the grommet that is on it cannot move and there is no way that the wires will reach the sensors they need too with the grommet in the firewall. unless the MAP sensor and all the other sensors have male conectors on the other ends of their wires, closer to the firewall.
i would be very gratefull if anyone could help me out on this because it seems i am either running into a lot of problems or just creating more by overthinking everything.