who has the fastest 318 ?!!!

you could go two ways

naturally aspirated you want to run 7500 / 8000 rpms will require lots of mods on the bottom end so it can survive up there. then W2 or better heads for the flow, intake to match etc. high compression. race gas or E85

other option some crazy aussie put a twin turbo on a 318 and got 479 hp out of it
it's in a charger valiant model car they had down under

[ame="https://www.youtube.com/watch?v=AYBTOGxj88E"]Twin Turbo 318 Chrysler Charger V8 on the dyno - YouTube[/ame]

p.s. everyone wants 360's or magnum blocks nobody wants 340's you should be able to find one very cheap

they accept 318 cranks, etc almost all the parts interchange between a 340 and 318. i think the rods are the same as but dont quote me on that. but heads/intake/flywheel/ etc all interchange.

just make sure on a 340 if you internal balance all parts are matched for that ( all neutral balanced crank, balancer, flywheel or flexplate) or if you go externally balanced then you need the right balancer and flywheel/flexplate etc.