RX7Club.com - Mazda RX7 Forum

Hey guys, Im looking at buying a series5 13bt which has had some work done to it.
Basically it was extend ported, dowled, rotors lightened and balanced and sloted for 3mm seals.
It has never been started, and the shop that built it made sure to put some oil in it, and its been regularly turned over. The only problem is that it has been sitting like that for 4 years.
So my question is, is there any reason why it shouldnt still be like the day it was built, or might there be some issues after that long?
Thanks for any advice you can offer...