Smallport RWD conversion question.

[HachirokuGTV]

I just got some new parts to convert my smallport 4age to rwd but when i tried to fit the new rear housing (for the heater i think) it hits on the oil return pipe. (i got a rwd 4age one).
So my question is: which model housing am i supposed to use on this engine so that it will miss hitting on the firewall.
Also if anyone has a rwd water pump pulley for sale pm me and let me know.
Cheers.

[frost]

cut the end off and replace it with rubber heater hose and it will bend around it,