Hold on, i was told (or read) the TRD motors still had the 11111- bit but the other part (more commonly known as 8826x) had dashes or was blank like "1111- ". So mine must be a 88262 head. So if this is the case, are these motors like the ones you were discribing as low compression anda different combustion design? Was this the design where one of the bores was on a different offset from the others?