Discussion Starter · #1 ·
Ok, I'm new to this Zetec (4) cylinder cars. I have an 8 sec Mustang GT, Vortech YSI supercharged 306 so I'm kinda spoiled. I read somewhere that a JRSC really adds little to the stock Zetec. Is that true? Even with my crappy first ball drive Paxton on my stock 302 I gained a bunch.