i figured around $800 but right now i'm having bigger problems new stator new cdi coil every thing checks out done kill switch and key bypass and not getting spark what so ever but everything else is getting power? rephrase headlights start getting power after about 6 kicks then they light up after every kick! any thoughts?It can vary depending on what exactly you need, but most bottom and rebuild’s run about $750-$1250 For parts. Of course labor would be extra. On all my motor builds I do a pretty thorough inspection and I let the customer know beforehand that if there is any part that needs to be replaced, I will replace it, it’s not up to them, and so financially they should plan for the worst. But usually it’s towards the cheaper side.