It is close race between F14T and F166 TURBO
I vote for F166 TURBO, because the naming the size (no16) or the number of cylinders (no6) and recently "F" is in Ferrari pedigree. Adding andditional TURBO add its bold impression "that is something new or revolutionary"...
Adding T in my opinion ruin one of most suspenseful 312T series, where T stands for "Tranverzale" (transversal gearbox). I say that is maybe better to follow tradition and at same time respect the past achievements.
"And if you no longer go for a gap that exists, you're no longer a racing driver..." Ayrton Senna