How would you build a low 10’s street car

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I have a pretty much finished car in my garage , and ran into a problem me or fast hasnt come up with an answer yet . I accidently grounded out the pos. battery post when putting a bigger new battery in , ecu wont lite up and fuel pump doesn`t come on when I turn the key, checked every fuse I can find, hot wired the pump/good ------------any ideas ??

Oh blah blah blah. I ain't ever seen your car anywhere but in the garage. lol