[boost addict]

so i searched but couldnt find a definitive answer, my cars getting tuned friday and im looking toward 400+ whp. i cant really see the stock driveshaft holding it since it has that rubber joint. what are the s13 driveshafts good for? also i just ordered a nrg 2.5 qr and dont have p/s so im wondering if the extra strain will cause it too develop a lot of play