You have to move some stuff out of the way to get to them, like the battery, but it's not that bad. You need a special crows foot O2 sensor wrench to get them out. Check the pre-cat gutting tech procedure for the part number and picture of the tool.
Jonathan Howlett AIM-JRHZ32 1993 Ultra Red Twin Turbo 1990 Pearl Yellow Twin Turbo(Deceased)