Different engine I beleive, the ecotec in the commodore was used right up until the VY (though you can't really tell because it changed so much, the difference between my friends VS and my brothers VY in the engine is world's apart)
The main change on the ECOTEC version of the V6 in the Commodore was lower internal friction (diffrent pistons) modded block, heaps of porting mods and EFI system.
The motor between the VS and VY is basically the same with a few mods on the balanceing and the EFI system.
I hate those V6 motors, but alas they are very light, produce bucketloads of low down torque, compact, use bugger all fuel, the EFI system is so easily reprogramable its not funny and cheap to get another one when one breaks.....as a motor for a engine swap nothing beats it on price to performance....
Sadly the RB30E/ET (now there is a motor I love.....besides the aweful noise they make) is a step backwards from the V6, its physically too large for its capacity, very heavy and its weight distribution is poor.......uh....it hurts to say that.
ECOTEC is a emissions system, based on the computer those motors ran. ECO Technology. I belive it has to do with the closed loop EFI control system with its learn function.
You can knock GM all you like (I do
) but their EFI and electronics have always been second to none....
BUT!
back on topic....
I like it it looks funky....how about a hard top version? The other problem I see is that people will "act all cool" and won't buy one since its been the "In" thing to hate and bag GM.....