No prob, as long as you have a matching nut and bolt and it fits through the hole, you should be good to go... but if you want to get really hardcore, I'm sure somebody somewhere has some exact torque specs for those specific bolts. I did my own exhaust too and I just snugged mine to my liking (not too loose, not too tight). It was the first time I ever did anything like that. I really enjoyed the satisfaction I got out of doing it myself, not to mention the money I saved in labor. Good luck with everything!
07 WRX (Albins 5MT + Blouch 20G)
Jorge Carrillo Tuned (365 whp/340 wtq)