Hi there,
Yes, you will need to purchase intake seals, and the throttle body seal.
As for the injectors, you can leave them attached.
Your 8 mm bolts are torqued to 106 in lbs, after using 242 loctite on the threads.
Torque in 3 steps, starting from the inside to the outside.
There are only the 2 coolant hoses to the throttle body.
There are no other coolant passages, within the intake.
Besttoyou, and let us know how you make out, c4c5