cylinder ridge
i wouldn't worry about that too much.
if it were me , i would put on a standard timing chain (they ran for thousands of miles of daily use when new) , turn it over by hand to make sure there are no unusual scratches or gouges in the cylinder walls, put some new gaskets in it and put it back together. no need to re-invent the mousetrap here.
i didn't catch if you have an automatic transmission in it. i've had it before where the trans fluid cooler in the radiator sprung a leak and mixed trans fluid with coolant. just thinking out loud.
i wouldn't worry about that too much.
if it were me , i would put on a standard timing chain (they ran for thousands of miles of daily use when new) , turn it over by hand to make sure there are no unusual scratches or gouges in the cylinder walls, put some new gaskets in it and put it back together. no need to re-invent the mousetrap here.
i didn't catch if you have an automatic transmission in it. i've had it before where the trans fluid cooler in the radiator sprung a leak and mixed trans fluid with coolant. just thinking out loud.