Here's the finished titan that I posted back in May, Interfector Tertio:
I replaced the normal Warlord head with a Deathstrike Cannon, which (in 2nd Edition Space Marine and NetEpic) halves the Titan's movement to 8cm. I mounted a Edenite Reaper Turrent from Exodus Wars at the front of the carapace to give it a face: this counts as an additional weapon (a Vulcan Mega-Bolter), at the expense of weakened armour. The arm weapons are from a Mark II Warlord.
More pictures below.