Its definately for piece of mind , at 11:1 stock will blow, just a matter off time. Don't go for anyhting past 10.6:1 unless you want to spend alot of money for no extra gains (mods a harder/tuning harder/need better gas/etc.)
Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST
Pre98 Zetec - Some Mods