If you search around there was a deal that Racetronix was giving to LS1 guys for a rewire and new oval connectors. It was and possibly still is being offered at a discount. I picked one up when they still had the promo going, I will see if I can find it still.
This is the link to it without a discount:
Racetronix - Fuel Pump Wiring Kit MP150/280, Walbro - Kit Configuration Page
EDIT- Found it but the code is expired. It is the same thing as the link above though.
I would still get that (oval connector) harness over the square connectors because they have a tendency to fail and melt.
Here is a picture (Upgraded oval connector at the bottom right plugs right into the canister hat):
IIRC some of the 2001's did have a venturi canister in them. It was a year that they put venturi canisters and pumps in some of the cars. If you don't have a venturi pump I believe the pump seal on your canister will not be the same as the one on the venturi canister you will be buying. You will have to make a hybrid canister using the venturi bucket and the hat from the pump that is on your car right now.
