yokes

guys,
i want to rebuild my 8 3/4 489 rear with a 4.86 Ratio. eaton tru track. Car has a Manual Transmission. Will see the track maybe with 50 runs a year maximum.

My question is the propper selection of the pinion yoke. 7290 is the U Joint currently used. My question is about the material. Billet steel is best? Jegs offers a mopar Performance Aluminium yoke. Can Aluminium withstand the hard launches? Whats your opinion in yokes?