Brought a Heng Long Tiger I a few days ago & as I am going to change a lot of it have been looking at forums & the net beforehand on how to strip it down.
Imagine my surprise when I looked at my new one against what I have read mine is a new style hull & some of the mods have already been done

The hull has had metal bracing for the suspension, but please note that due to the new position of the screw mounts this is now a 2 piece unit & not just a single strip. Also the road wheels are now an allen screw fitting with just a painted "rubber" effect on the edges.
Mine was date stamped as 02/2014 & I hope this helps.