Our 1974 Duster Project! Give us some ideas

You're right. Me and my friends are asking around for paint scheme ideas,were still not sure what the end result color will be, but what were sure of, is that we want it to be a
1.street/strip car
2.daily driver
3.Reach high 12's in the Quarter Mile.


"giving out" was an extremely bad choice of words, I apologize.
We took the car to a shop to be lowered, the mechanic stripped the bolt and ruined the left Torsion Bar assembly.

quick questions.
Were going to try and squeeze around 400HP out of the Duster.
When done, would we need to reinforce the car because of the power?

Do you think it'll be possible to get that much power out of a 318, or are we looking at an engine swap?