Yep. The x-ray mod enables flight in survival (that's the chief reason why I installed it, because at the time, there was no other working flight mechanic in 1.7.2)
Can take that out, though.
The other 'cheaty-ish' mod is the finder mod, which lets you hone in on specific blocks. I put it in because it also has waypoints, and I like my waypoints.
and finding where the stupid enderman is in my base
That's a client side mod anyway so .. moot point
A little warning about DungeonPack - there are a lot of extra dungeons added to the game, they are fun, and they will quickly kill you without full enchanted diamond armor. Slightly safer than the nether to get blazes, but only slightly.
oh yeah gravestones, let me see if that's been ported