I can't vouch for spectra's but sephia's are awesome. I use to beat my mom's spare car (kia sephia) up all the time when I was like 16. lolol. I also raced a SOHC vtec civic and just did beat it. I have witnesses that were their. haha. Only thing performance wise done to the sephia was a K&N air filter and some plug wires.