Could you elaborate on the "risky" bit please, are we talking, too much stress on engine, driveline components etc
Not so much to much stress but MORE of course. If it`s not tuned properly it`s not likely to last 5 minutes. You also need to factor in other upgrades such as suspension, tyres, brakes. Making a stock 350z pushout 400+ hp is ok but if you actually want to drive it all the previously mentioned parts are a MUST,
Whys that Darran lol:)