1) It is a direct bolt on. You might need a 2.0" to 2.25" exhaust adapter and one exahust clamp. I've put an r/t rear section on a 2002 ES and it didn't need an adpter. I put one on a 2004 SXT and it needed an adapter.
But there shouldn't be any cutting required, just bolts.
2) By the drivers side rear tire there is a clamp on the stock exhaust. Loosen it. Then there are two rubber hangers on the left and right side of the muffler. Get a screwdirver and pry them off the muffler. Last, pUll the muffler off the exhaust piping near the drivers side rear tire. This is likely to be the most difficult part!
It's likley to be seized on there.
3) Same as taking off. But you might have to place an adapter piece on the connection first. Leave all clamps loose untill the muffler is on the rubber hangers. You might have to bend the metal portions of the hangers so the tips don't rub on the fascia.(You could also modify the rubber hangers to make them longer (therefore making the tips hang lower).)
An exhaust shop could probably install it for $20-$40.
