With 787B/GT-One/R390 you should be able to pull about 1:05:XXX
With a JGTC you should pull a 1:13:XXX
Any nice RWD 300+ hp car should get about a 1:19:XXX
I am just basically guessing. I may be way off.
I have pulled a 00:57:7XX with the F094/S, it is all about getting good exit speed after the first hairpin at the end of the straight....