It will probably hold, but my experience has been not to go more than 550hp on a 2-bolt block. You will certainly be on the ragged edge with the 175 shot. Stick with 100 IMHO.

That 100 shot would put your Nova solidly into the 10's. I doubt you want much more than that. If you run it at the strip, you will have to have a roll cage for anything under 11.49 That is the magic number, and your engine with no nitrous should give you close to that.