the front suspension has torsion bars, kinda odd, but people make aftermarket ones that make it stiffer and whatever....the engine is basically an american version of the ZC... most parts aren't interchangeable though....not a ton you can do to it compared to other hondas, but you can get all the basic bolt ons and if you wanted, you could do some head or piston swapping to up the compression depending on if it's 86-87 or 88-89.....it's just limited....