Have you ever been to an Ontrack Event? Do you have a lot of track experience? If no to any of the above I would not worry about converting to a different fluid. Just make sure the fluid you have is clean so that it will retain its boiling point.... from what I know the dirtier the fluid the lower the boiling point.
Try to find a Dot 3 with a high boiling point ... that is what I run.

I will be at IRP this weekend as well. I have been to many, many track events and have only ever used DOT 3. Pedal gets a bit mushy towards the end of the session but that is a result of the high speeds I am running at the end of the strightaways. IRP has one mother of a long strightaway.

See you there.

Fern


1999 SVT Contour Silver Frost Bassani,Ground Controls Street..17x7 Rage 5.0/Falken Azenis Sport 225/45/ZR17 Track...Kosei K-1 17x7.5 Avon Tech Ra 225/45/17/ Quaife/ SPEC Stage III/ Fidanza /Capaldi Racing 4.5 final drive/TCE Brake Kit 13"