XRAY - Model racing cars

Hello all. Well i've never raced in my life before but i've purchased an XRAY from a local dealer and i was lead to believe that the car i had was a good car however i've now been told its a two year old car or more. Its the first Xray apparently and as i feel a little cheated although i was buying second hand i'd like to know what parts i can add to my car to improve it.. The alumiunm shock towers will be replaced with the originals i don't know why the previous owner did this.. Regards.. and here's the pics.. i'm from the UK so if anyone knows where i can get spare parts that would be handy..Also is there a preferd body for the xray? I guess i just want to improve the performance of this car without having to spend £300 + pounds..Regards.. nic