Just don't go past 15psi and at full boost I wouldn't run leaner than 10.8:1 A/F ratios for pump gas.oh trust me i know :-D. i would get the fd refurb the motor and keep it for weekends only. it won't be my main car. but i'd rather buy a hot car and blow 10K on it. and i just love the way FD's look. :-D i used to own an fc but i know what kind of a head ache the 13brew is lo.. there was a guy making 430 rwhp with one near my college and he went through 3 motors in one year. i would only shoot for 300-340 rwhp on a built engine and call it a day.
These engines can handle power, just no detonation.
Detonation is usually a result of wrong tune and supporting mods.