8.750 w/ transbrake

I use a 489 case in stock trim a steel crush collar mark willams steel spool, moser 30 spline axles, large ujoint yoke with moroso ujoint girdles. I have had very good luck with stock housings but i do replace the cap bolts with arp, I pull it out and check it after every 50 pases. use 75w90 syntheic mopar oil and changed every time i pull it out. I used to run a 4 speed with less hp and i broke ring gears, main caps, etc often, everyone told a trans brake is just as hard on parts, but my experence has been, its alot easier than a 4 speed and yes i use a stock large ujoint 1290 driveshaft that came in my 72 340 duster parts car but i do use only spicer joints. I do not have a back brace on the housing yet thats this winters project (i have been saying that for 4 years now) lol..