If I were you I'd buy a 275/60 BFG because the look better, don't bulge on stock rims, and the 28" tall tire won't limit you RPM wise. The speedo will be slightly off though.
A 275/50 will work but you might need a small spacer. I did on my stock wheels, and if you have aluminum brake drums you probably won't need a spacer though. The 50s also keep the stock height of 26" which will limit you in a 1/4 race because you're run out of RPMs.
Check my photo albums. I have pictures of my car with each. The Welds have the 275/60s