is it tough enough

Hey FABO family! Scored a nice 8&1/4 rear with sure grip and 4:10 gears. Sure grip unit is new and axle has maybe 20 light passes on it. I plan on putting it in about a 350 horse 74 Dart. Going to run it mostly on street and occasional fun run at strip. Will this thing hold up and be reliable? I know a nice 8&3/4 is the best but, this was a great deal for a bolt in rear. What do you guys think? Thanks for any info or experiences any of you have had with these.