google "image search" and try pinstriping.
What are you trying to do? Does it need to be by hand, or are you looking for a digital file?
I know a handful of 'stripers, but I dont like any of there work. To relaxed, to too manic, to psychodelic have to be high as **** to pull a crazy good line. Pinstriping is as different as each guys personality.
I have several different artists work hanging up and around my garage, but my favorite dude is a guy that goes by Caffeine. I have shipped him stuff to do. Cause I dig his style.
But a few names you can search is Scratch, Caffeine, Von Franco, Von Dutch, Anthony White, Tommy the Greek, Peter Pan of Chicago.
Alot of those guys are either dead or assholes.
Quick story, an old man I know in KC had me picking up a welder from him to bring back to Houston to somebody he sold it to. That past time hanging out with him we were checking out his '64 Chevy pickup. Orange, white top, 3/4 ton longbed, nothing fancy. I knew he moved to KC from Cali 30 years prior and in this truck to boot. He was a machinist and specialized in printing presses so he'd been working for the KC Star for the past 30 years. Well he asked me about something on his carb on his truck, and he pops the hood and it is all pinstripped out in the engine compartment. I'm like WOW, but WTF? Turns out his dad and Kenneth Howard (Von Dutch) were long time friends. well one night "Dutchy" as he called him got too gone to go anywhere so the old man locks "Dutchy" in the shop. When they get in the next morning to open up "Dutchy" has pinstriped any and everything that wasn't pinned down, including the engine bay of this then only couple year old truck. I thought it a funny story that I met someone that actually knew Kenneth Howard. And I'm not talking about the commercialized "Von Dutch" **** you see out there. From what I hear "Dutchy" has been turning over in his grave about that ****.