freeze plug replacing...

just got the new motor in a couple weeks ago, and had to race it today, couldn't wait. i tuned it myself...it ran good enough for me to be comfortable running it...but the freeze plug right at the passenger side motor mount blew the f out. any tips on replacing that bad boy?
and the whole ass end of my car is covered in motor oil. the oil is full though. i haven't got it up on a lift yet, but theres no coolant in the oil, and its such a mess underneath, and so low to begin with, i can't see yet what it might be. i dont have tailpipes, just dumps, but even so i felt in them and no oily residue or anything was in them.
i know when the freeze plug blew i started steaming, but someone said they thought i was smoking down the track too...not just steaming from coolant. i had oil pressure the whole time, never over heated, and it still starts fine cuz i started it for like 2 seconds to move it away from a tree to get the tow truck to it.
help? thanks