Originally Posted by asw7576
I can't answer this but I can share some story from my recent race in Futaba Open 2006 : My friend ( experience driver ) have LL3 and he switched to JP FX3 because he could not make it 5 minutes with LL3 during practice day.
I suggest the NSR S3, hopefully you get S5 for more top speed.
I ran a heavily modified RR12L3,which is basically the same engine in the shorter case and made 5 minutes easy