Pull up question! p90X

hello all!

I did my first week of p90X last week (lean) and it was awesome! The only thing is, I work out in my tiny room in my two bedroom apartment. I don't have a pull up bar and have no place to attach my resistence bands so would it be okay for me to just sub pull ups with something like dumbell pullovers which still work the back but don't require the material? I know it's not the best workout but I really dont see any other option. My three months overlap with my first month at university this fall and so I'd really like to continue doing p90X there and definitley won't be able to get a pull up bar in my room.

Help?

i would like to bump this bc i am in a similar situation!

Pullovers can replace a pullup or lat pulldown, but you could also try a removable pullup bar, like this one