had no luck finding this info so fig i take pics and post it....
ls1 throttle body set up for bonn....
remove tps and iac sensors so don't get hurt
remove throttle body blade by removing two screw holding it in
take hammer and knock the linkage shaft out thru the tps sensor opening. there is a washer holding it in so it will take a few wacks just be careful not to damage the end.
this is what you are after...
next you will have to grind the end off of the linkage end so you can remove the cruise nub and the cable guide.
once they are removed rotate then 180 degrees and slid back on. by only flipping cable guide and cruise nub the throttle stops stay in normal location. then reweld the shaft to the linkage
clean end back up with grinder and it ready to go back together
thats it. here it is insatlled