look i am quite sure you gonna under estimate the 115,s engine and sorry to say the reason behind is that you didnt ever had a run on original 115,s engine,so plz dont under estimate it
its has enough killing power which can express your emotions on the roads......
....it has worth and if u have original soundless engine then it can perform way better then altered Z.... engine into 115,s frame.....lot of things are involve in this alteration and being in Punjab it will not be a good option for u to install that engine and one thing more, btw these engine are out of stock these days, so this is an other issue....and one would have this engine for alteration into 115,s frame then not only the engine parts can make problem, you will also need a good mechanic for this alteration and also for the future run
so in my point of view you should stick to original one and when ever the original 4x8 would arrive then just go for it.....thanks