internal rattle...

I was looking to buy a gsx and I found one for a good deal, the engine is totally rebuilt with forged pistons, fully coated and cryo-treated, prepped rods also treated and the balance shaft removed. He said that
the rebuilt engine has internal "rattle" and he has no time to go through
motor again. Thus he is forced to sell. He said that the car was shut off as as soon as the sound was heard, so that no major damage would occure. He said it sounds as though the balance shaft has started making the sounds. What do you guys think about this?

As a side note, I was wondering how loud a 4G63 will sound with the balance shaft removed? could this be the noise it is making?

all the stuff i have read about removing the balance shafts say that there is increased noise from the engine.

I have read the same things also, but would it make loud noises from inside the engine?

just wanted to bump this, didnt know if some of you didnt get a chance to see this and chime in with your 2 cents, any info would be appreciated.

i removed the BS from the 6 bolt i have in my GST and that doesnt make much noise, its a little bit more shakey/vibrations on high rpms but thats all i have noticed!