my son made me a custom heat sink,it even has a small computer fan on it,and he had some military grade paste to put on it.its overkill but thats ok.you are right,i have a extra coil new in the box,new pickup,all i need is another 4 pin module and i will be set with about everything i need in case of failure.it may be me but my engine seems more responsive with the new module vs the box.it even idles without a choke in just a few seconds from starting.