On sides of engine block.
No
The 1996-2006 Chevy Venture has a 3.4L V6 engine and requires 6 spark plugs.
It is located beneath the power steering pump in the engine block
It should bolt right in as the 3.4 is the same block as the 3.1 and as long as you have the wiring harness and computer your all set.
3.4
Engine size in terms of mililiter.
3400 v6
3400 (code E) V6 Engine: 11.3 us quarts (10.7 liters) 3800 (code K) V6 Engine: 11.7 us quarts (11.0 liters)
The coolant bleeder valve should be on the front passenger side of the engine. It will be on one of the metal hoses. The bleeder valve on the 3400 V6 engine is located on a black stem where the water pump connects to the engine block.
yes
If you mean engine and drive train parts....yes.
This swap is not recommended, and does not have any benefit. The 3800 engine is superior to the 3400 engine in every way. Replacement would be complicated and costly, you're better off to buy a vehicle that already has a 3400 in it, if that's really what you want.