The Turbo Coupe had a higher pressure wastegate and a hi energy ignition. The SHO had a computer chip, dynomax duals, tbody and mass air.
The GT has pulleys, Custom Diablo chip, Headers, P I Heads with stage 2 porting, stage 2 billet cams, super subframe connectors, export brace, 3.73 gears and a K & N filter charger. Soon it will have 24# injectors a power pipe, mass air sensor, throttle body and throttle plenum. Currently it turns the rollers at 289.7 hp and 289.5 lbft at the wheels. It has more snot than the Cobras up to 2001 and the F bodies (stock).
I got the GT for my 40th, now that my son is back from the middleeast he is taking it over. He has inherited all of my hot rod FORDs except my 62 Galaxie 500XL.
It doesn't suck to be him!
Enjoy your LS, I really enjoy mine now that they have it fixed.
doctorj