I have been looking at the pics on the CEN website. Seems the CT5 is EXACTLY the same as the CT4-S. I own a CT4, a great car. Guess the CT5's difference is only the body shell and anodized springs.

If it IS different, CEN should explain what the differences are because what is offered in the description on the website gives nothing but CT4-S with a new name tag to simbolize the new version. A VW Jetta - Bora of sorts, only the CT has not changed at all?

Here is the main upgrade to look forward to:

"
DUAL-SPEED DRIVETRAIN!

2 in 1! The CT5 racing sedan from CEN Racing comes with an alternative drive train. The choice is yours! Reach speeds of up to 75mph, or hit the local on-road track with blistering low end speeds to help you conquer your competition. The diversity of the CT5 by CEN Racing allows you to express the inner speed freak within, whether it’s at the track or in the parking lot."

so I guess it is the exact same CT4-S, except it includes a little bag with the optional drivetrain in it. I have the CT4-S and have the optional drivetrain in a little separate bag as well... guess there is no difference to someone like me. Maybe the new body.

Any one know what kind spark plug can i use on my ct4-S? Can I use O.S. spark plug?

os#8 glow plug should keep it happy