318 1/8 time improvement

Its a street car and runs on pump gas and I know people associated with the build.

I'm personally at 10-1 on your equivalent 87 octane pump fuel now with a cam that's 212/220 and I'll bump it up to 11-1 in the not too distant future.
The fact that its a " build " tells me a lot of thought went in to it and there's more to the story. Its not some 60,000 mile half worn out 318 like mine was. Yes 12.50s is fast but imagine how much quicker it would be with gears and a converter , say a 10 inch converter and 3.91s and still be street able.