Max HP/TQ w/Richmond 5 speed?

[71OLDS]

For anyone running a Richmond 5 speed, just curious how much hp/TQ you are safely producing.

I have a Richmond 5 speed Road Race trans that I'm assuming will have a limited life behind my Olds 468 when it's complete....guessing around 450 hp/480 TQ (at wheels).....Richmond says they can only advertise to 450 ft lbs at the rear wheels but claim they can take much more...mine will be used for daily driving, a few 1/4 mile runs a year (w/the 305/45/18 drag radials), and hopefully some SOLO II runs...

Anyone out there successfully pushing the 450 limit w/a Richmond 5 speed?

Thanks!
-Joe