The motor on my 2004 Subaru WRX has to be replaced, in fact it's at the shop now waiting on the used motor. I'm a paramedic so I'm good with people not so much with cars and I'm wondering since they're going to have to take the motor out (and exchange manifolds since it's a Japanese motor) what else should I have done in the way of maintenance or minor upgrades? I'm going to have to clutch replaced, transmission fluid and rear differential fluid changed while it's out. Any suggestions? Thus far this is costing less than $3K and I'd like to keep it that way but does anyone have any suggestions of what else I might consider doing? Thanks.