Advice please I'm looking for around 350bhp/380lb/ft for my track car and am certain the standered gearbox will fail me at some point , what box would you recommend to take the above torque and abuse they get on track days.

 

Alright Lee i would have to recommend a six speed or ppg as round the track it is very unforgiving and will really hammer the box at that power level.
If it's just a road car then you can be a lot more sympathetic with the transmission unlike track use.
How's the cage going as well?

 

If you can afford a 6 speed box, then go for a hawkeye one. They seem to be the best.