im dun with my stock cobra motor, ive taken what i need off of it for my build and now its ready for a new home!!! theres nothing wrong with it at all, just wasnt up for the power i was requesting from it, so instead of abusing it until it gave, i decided to just replace it before any mods were done at all!!!! shes a true beast, like i said nothing wrong, still in great working order and a great starting point for any modular build. form what i understand what makes these motors so great is how theyre built, the internals are quite a bit stronger than a gts, and the block in and of its self is good for 2000 hp. change out the internals and you could have a true beast on your hands. before i started the build i had several offers for around 2 grand for the short block, regretably i had to turn down all these offers because the build hadnt even begun!!! so that is what im asking $2000. if you would like to come take a look at it you can pm me, and id be more than willing to help out in any way i can!!! or you can gimme a call, 614-499-8736