i think u will be fine just make sure u have a great tune and quality gear to support it, i'm looking at running a k20 frank 12.5 maybe 13 on pump gas for a future project, one of my worries is the fuel being consistent and actually 98. Check out some us forums heaps of info there, quite a few run this comp on street engines and pump gas. Prolly also good to talk to dyno dave and yonas will have an idea from his experience too.