Mopar Performance Carb 5.7L Crate Engine

I already have a 904 in the Dart. Do you think if it's rebuilt or built up with a shift kit, it would handle it? Would it utilize the same flexplate as the 727? I'll be running 1.06" torsion bars and I've read up on how tight the fit is.

Now you guys are tempting me. If I do end up getting this engine, I may just get my 273 fixed if it's just a head job and leave this in the garage till next summer. :D I've got quite a bit saved up now, but I'll be graduating with a BS in Mechanical Engineering around April and may already have a job lined up with my current employer.