Lube Question

[scatpakman]

I'm putting the rear end housing back together and I'm looking for some advice. What brand and weight rear end lube would you recommend. Here's what I'm putting together;

68 Dart -
383 w/475hp
8.75 Sure Grip w/3:91's
727 3500 Stall Convert

Also what kind of sure grip additive should I use?

Thanks FABO!

 

[EL5DEMON340]

first choice for me would be 85/140 then 80/90, dino. if you have a clutch type sure grip Napa has the additive on their shelf about 4 oz i think, if its the cone type don't need any additive