First Welcome!
The Jake Raby solutions look great. Google Flat6Innovations and LN Engineering.
I think an 03 is less likely to have either problem. The RMS is not that hard tp repair and a bit of a drip can come from several places.
The IMS can obviously be explosive. I'm going to Jake's upgrade for about $1k when I can afford it after end of year property taxes are paid.
Tips have fewer RMS issues, cuz of the lower weight at that end. Not sure about IMS? Never saw that before.
Use high quality oil/filters and change at about 5-6k miles.