Yes
One for each cylinder
Yes , it has ( 6 ) fuel injectors
That is were the fuel injectors are at, and the fuel pressure regulator is on the rear of it.
They could be the same but chances are the 305 will have slightly smaller injectors then a 350. The injectors may operate at different fuel pressures too.
No
Show me where it is?
It has 8 injectors, 1 per cylinder
NO, The injectors are different on the 454
Normally it is located on the fuel rail to the fuel injectors with a vacuum hose on the top.
The 1999 Chevy Venture is equipped with a total of six fuel injectors, as it features a V6 engine. Each cylinder in the engine has its own fuel injector, delivering fuel directly into the combustion chamber for optimal performance and efficiency.
50psi +or- 5psi
If it's a 96 vortec 350 / 5.7L then it has 8. 1 per cylinder. If the engine looks like it has a carburetor on the top of it. Then it has 2 injectors and that fuel system is called TBI / Throttle Body Injection.