1996 skylark intake gasket/timing chain cover question

Hi.There is this 96 Skylark for sale for $750.150k miles.Anyway,The lady said her mechanic told here the intake gasket needed to be replaced along with the timing chain cover gasket because its leaking antifreeze.My question is how hard is it to do?Do i have to jack the engine up?Can I do this myself?I have access to impact tools and a garage.Its a 4 cylinder(2.4 or 2.3?)...Any input appreciated.Thanks..Mark