I have been looking into the Greddy kit with intercooler. I feel if the kit is installed properly and set at a modest boost level the car should remain reliable depending on my driving. Am I way off on this?

 

reliable by what standards?

could you get 100,000 miles out of it without internal upgades, maybe.

If you want to be realistic expect engine, trans and diff rebuilds. Plus axles and driveshafts.

2003 G35 Coupe 6MT/Black/Graphite/15% tint/6 wire GroundingGear™