Allow me, Bill is clearly running a L26 Motor in his 97-03 Car, He does not have a Cable drive throttle body on a 04+ Grand prix
To run a L26 in place of a L36/L67 you need the TB adapter to convert it back to the Stock TB from the Series 2 motor.
Lag on a 04 Fly by wire TB/ 2004+ Grand Prix?, First Ive heard of that. Saying you want to Convert a 04+ Car to cable TB is Absoloutely Dumb/Makes no sense
Not to mention its Impossible to do, And again makes no sense to even talk about Etc. Work on Chroming your windshield with your free time Insted