we have 3 in the family,all TT'S, one being a 95 SMZ. I get beat everytime by all 3 in my 89t @ 10lbs of boost. The N/A Z has a different rear end than the TT does. With both being stock the N/A Z will hang with a TT for a very short time, pretty tourqey off the line. Once Spool up begins...