Must be a rare motor if the valve cover says ZTEK on it.
Especially if it needs machine work after it jumped time. The normal motors are non-interference.
04 ZX3 Mostly Stock [3/13 ROTM]["Best Non-SVT" FITF '12][7/14 ROTM]
12 SE Hatch Sport & Winter Package, ST Front End
94 F150 XLT DD
89 Bronco II XLT Well the body is still stock, what's left of it