beanoil, that sounds great. I was thinking of the super-light Shockproof oils ... but Red Line products don't always preform as well in the real world as they do on paper. Gald to hear this worked out for you.
With all the excellent manual transmission fluids available, I'm surprised no one here has tried the following:
Royal Purple Syncromax (ATF thin with better add-pack)
Pennzoil Syncromesh (or the equivalent Chrysler/GM OEM fluids)
Red Line MTL
Amsoil MTF
Nissan 75W-85 MTF
Any or all of the above may be an ideal compromise between traditional 90 weight gear oils and motor oils or ATFs which simply don't have the add-pack for gearbox protection. For all-out racing, the super-thin Royal Purple product seems to be a no-brainer.