I would say that this engine is realiable due to the fact that it is forged pistons.
as RNS11Z said Inless you have built an engine up your self then you have no idear how much it cost and the time put into it.
Then again for eg, if you save more you'll be getting for around 35k a thrashed gtr with high klm's with stock internals.
nice car & good luck with the sale,
Cam