Take a bench grinder to any ol 15 mm nut for your unicorn nut and make the head a 13 mm. Works great.

Vaccuum hoses just set up your own with line and T's from the parts store.

Also if you get an l32 map sensor it will just plug into your wiring harness and you don't need to adapt it at all.

You can use your stock throttle body. l67 isn't much different, but if you got it cheap at a JY then kudos.
Coils are the same as well.