I went too my local SHOP and they made me a 440x2 car on the spot.The guy told me a 440x2 chassis rtr was $10 and a hopped chassis was $20 ,He charged me 10... with a played wth texaco indy body for free.But he ended up having to use parts off of his real race cars!(Maybe he was talking about tires being the ones he put on the car with the yellow 440x2 on the rear tires are they hop up?)The car is very fast and rarely comes off the track. 1 how do you ID Hop up parts on a 440x2 .2 Is The chassis suppose to have play(SWAY) with your fingers moving it?3 he told me dont bother to try to take the original rear wheels off of my tyco pro 2 because they break or prone to break ?same with the tires and front rims l,hard to find?Any help..... Thanks.