[dtw]

No - if you re-read, I state that there is probably no clearancing problem at all, ie, plenty of clearance. I'd run through a quick clearancing exercise just to have peace of mind, though. Takes five minutes - see the recent thread on this, you can just set valve lash to zero on intake and exhaust rockers on 1 and 4, turn in 1.5 more turns, and carefully rotate the crank through 720 deg. Do each rocker separately, don't turn them all in at once. More details in other threads if you need more info.

They do seem to the "T"s of late years- I think someone here on the board once theorized that a T cam would probably work pretty well in the CIS engines.