if the athena head gasket blew between these cylinders then i dont thing the oem will hold up long, could be block out and off to the machine shop for decking !
use a straight edge ruler or something true and flat and get the feeler gauges on it, pretty sure there is a manual on google search and you find all info and what to do, good luck
http://www.ebay.co.uk/itm/Rare-JDM-Toyota-Starlet-Glanza-V-Automatic-With-Lots-Of-Extras-Only-45k-Miles-/222070073876?hash=item33b4686a14:g:B6wAAOSwFNZW0rjq not mine but looks decent