What to do to get 300 rwhp on a Mach 1

[AlloyPony]

I haven't put my Mach on a dyno yet.

But the 2V GT cars almost always made 220-225 stock. Mine with CAI, TB, underdrive pullies, exhaust, and 3.73 gears made 260 on a Mustang brand dyno which is notorious for reading lower than other brands. That's a nearly 40 horsepower increase with very simple bolt-ons and a tune.

I have been told by the same dyno operator that Mach 1 cars generally are very well tuned from the factory and don't pick up the same kind of numbers as the GT cars do from bolt-ons and tunes. He said the biggest N/A gains he's ever seen in his shop was a guy who did very specific cams and got 50 HP on the dyno from those.