just disassembled an entire 95 with a 3.4
leaks----ha
lots
to change valve cover gaskets:
Remove plennum,with fuel rail---have fun---sucks
Then cover holes in intake
pry old gaskets apart
clean all surfaces---by hand sucks---get an air powerd wizzer

Get a full gasketset with injector orings for sure.
The rear plenum bolt won`t come out due to upper deck clearance so pop `em,raise `em and tape `em up so you can wrestle the plenum out .
Get a shop manual---helps alot
This design is service unfriendly so --drink beer and walk away when pizzed---and you will be pizzzed

good luck
dv