Sup guys just joining this thread i own a ct4-s my favorite car 4-tec my second favortie and a fusion great car but everyone expects it to be awesome but when they see the 4-tec or ct4s they are shocked, like the ct4s great car and awesome price rolland i have seen you in some other threads my ct4s and fusion have the same upgrades almost all the way out i opted for the acceleration in both sets and my ct4s wins my 4 tec beats my fusion and also handles the best that was odd for me since i heard the 4tec sucks i guess i just dialed it in awesome my ct4s is by far my best drag car it handles comparable to the fusion both handle the same and great my ct4s i am running the tmaxx 2.5r motor used to have a wasp .28 in it but the tmaxx motor is actually faster, how i do not know i guess maybe the 50,000 rpms it claims which i doubt but it might since it is so fast. buddy of mine had that motor in his 4tec and it hauled and when i asked what motor he had i laughed but i had to buy one to see if it was fluke and for 130 i couldn't go wrong i needed a motor to test my nx express kit on the way not here yet so i will post the results of that later but yeah maybe a motor suggestion for the tr4 earlier only thing is take time to break it in and check it everytime you use it like other motors and plus after that motor is broke in upgrade the head i rec mutant but and larger head will do but do this only after you break the motor in or else the motor will not get hot enough to break in. i will post some pics of my cars soon