is there a way to make the 6 speed stonger and an advantage.

 

lets put it this way, in japan there is 2 MRs the 5sp MR RS and the 6sp MR RS. when the IX came out the did the track tests and the 1320 test and the 5sp came out on top, if your worried about the weight of the gsr than get an RS its the only one that the U.S. got that is closer to what the car is in japan. Get it and put the jdm rs mivec map on it and it will essiently be a MR RS 5sp.

 

see the car and driver results
and motor trend results...
or Just read wartalons answer.

 

i have the Best of Both Worlds ! a 5 Speed MR !

but for the topic, 5 speed for drag
and 6 speed for track

 

I asked AMS about this and they told me the 6 speed is a weaker trans, it breaks faster and 5 speed is better they said. Also he said dont even waste ur $ getting a built 6 speed. The Best way to go is a shep trans 5 speed trans they told me.