1jz exh outlet

[1jzr32]

I just drop the 1jz head & found the exhaust outlet No 2 & 5 are smaller than others & abit offset from the exh. manifold. If port & match this smaller holes to same size with others, Any benefit? & what is the reason on this smaller holes. Is for flow ?

 

[annoyingrob]

I think it's a space issue more than anything.