the bonnets for the GT and LT are the same - the vents just covered further along the bulge that ran down either side of the bonnet .. more cnace of rust IMHO ..
I sold a set of slightly tatty GT vents 2 yrs ago for $150 dollars - so dont expect them to be cheap when you find them - IF you can find them
Im now sourcing GT parts from the US and across australia - in HOPE that ill eb able to make boulds of the badges in particular for other enthusiasts who want to make their LT's lok alikes ..
I already have the LT ST AND the GT badge for the 71 ta22 ( when the person who has it contacts me ) so ill hopefully have means soon ..
Also sourcing a GT grill from the states - they are non obtainable here in OZ as far as i know for 71-74's .. Ill keep you posted if i find others for sale ..