67 dart stroker hellcat gen3 hemi with twin turbos...

Running me some brake lines now. Got the underneath of the car coated besides the main pass floor pan area. Wont do that till all the floor bars are welded in. But making progress. Not fast progress but progress non the less.
have the master cylinder already to go just need to finalize the brake pedal travel and stop it from returning back to far. Otherwise the damn shaft to the mc falls out, wtf?? Should there be a spring on the pedal to stop this???