Why am i not surprised that the engine started with a jump start and fresh fuel... gotta love the a series un-kill-ability.

Brakes, well there isnt really a direct swap available with datsun parts.

Some hve used sigma stuff, some laser stuff and i think they was a vannette conversion happening somewhere. IN the end, you need custom brackets to get anything to fit, but it is do-able.

As for getting the original brakes working, well thats just persistance. Keep pumping clean fuild through to clear any air out first.

You may need to remove the wheel cylinder to pull it apart to free it up. For some reason the 1k wheel cylinders like to sieze up quickly if you dont use em.