If the rom has been built with the 3.0 lock screen I don't think you can download. You may want to try UberBAMF I believe it allows you to choose what elements from 2.1 and 3.0 you want.

As for SU there is a flashable version you can get and flash to your phone to fix that.

Try the download in the OP here for superuser, flash in recovery

 

You flash it in recovery like a rom. Power down. Go to hboot by pressing volume down while powering up, choose recovery and flash the zip.

 

UberBAMF

 

Kind of a work around, but you can use widgetlocker and chose from sense (2.X and 3.0), iPhone, miui and moto (vanilla) sliders. I haven't used a stock lock screen in almost a year, lol. WL is one of my top 5 must have apps

 

Same here I hate having to do much to unlock my phone. I am not worried about security because it is almost always within 2 feet of me. I use widget locker with a back button unlock, I've had it since before I rooted my OG Droid and can't stand the sense lock screen, it also give more options than just unlock style so it is something everyone should look into.

 

Glad it worked for you. Sorry I forgot about WL as I really don't use a slider to unlock my phone (something about me being anti-iOS)

 

You can still use a security lock screen with WL. You unlock WL into the security just like stock. It kind of messes with the interface for some from what I've heard, but it does work. By security I mean the pin, password or pattern unlock

 

Yeah I know but I don't feel a need to do so, too much of a PITA

 

I was just saying it in general for anyone who may see this thread and doesn't know about WL

 

i know it seems very few people actually know how to hit the search button ,but i agree its good to add things in for that reason. what may seem like unneccessary info at the time can be extremely helpful to people that come across the thread in a search months from now. newbies will continue to come as new phones come out and used ones pop up cheap,and eventually all of us here will be doing this in another forum so we should leave as much behind as we can

thats why it irritates me when someone starts a thread,then just says "nevermind,fixed it" without saying what they did to fix... that doesnt help future searchers at all!

just some random thots inspired by worms statement... carry on