TNT holds a special place in my heart because it was the first vintage deck I ever brought to a tournament! I tried making this deck work a few months ago, and couldn't get it off the ground ... but I hope you have better luck than I did.
A few old-guard players have mentioned Anger for the deck, but I want to make sure it isn't missed what Anger does for this list - while it looks like Anger only buys you one extra turn, it can actually buy you two. Pretty often Survival->Anger is the "plan A" for this deck, with Workshop as the backup.
With Survival of the Fittest and any creature in hand, you can pay GGGR to:
G => discard [any creature] for Anger,
G => discard Anger for [giant dude],
G => discard [giant dude] for Goblin Welder,
R => play Goblin Welder with haste, immediately activated it to weld in [giant dude] with haste and attack.
it only costs GGR if you have a piece in hand, and it's very realistic to pull off the turn after you play Survival. I like attacking with a turn 2/turn 3 Sundering Titan or Myr Battlesphere myself, but Wurmcoil Engine is no slouch. Remember that the next turn, you have active Welder along with your giant creature. Of course, Anger can be vulnerable to Strip effects and grave hate, which are both more common now than they used to be.