i have an 05 v-star custom 650 n i wanna turn it into a bobber. the reason y i dont wanna step up to a bigger bike all together is cuz this frame fits me perfect and i really like the style its got which gave me the idea to turn it into a bobber in the first place, however seeing as how it tops out at 90mph, i gotta do sumin to i can cruise at 90mph for a while without the fear of blowin out my engine so im wondering what engines i might be able to find that would fit my frame. doesnt matter what make, jus throw it out there