Ah, ok. That is not so uncommon. It can be a relatively cheap way to improve performance. Some sets of cams have different lift and duration from each other. Some judicious mixing and matching can shift the torque peak a bit.
It also seems like an easy way to make things worse.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
