Best gear for Sebring, Moroso, Roebling?

[Don Marshall <marshall@nefcom.net>]

Amici...

I'm looking for gearing recommendations for Sebring, Moroso and Roebling Rd
for a TR4A vintage racer with stock TR6 tranny and no OD (yet).  I have
3.45, 3.7, 4.3 and 4.55 to choose from without spending any more $$.   The
best answer is probably 4.1, since I don't have one of those, but I have to
use what I've got for now.  Any suggestions?

Thanks...
Don Marshall