Non HD into 2000 gtp

[BrokeMofugga]

Hello im new here.and im about to be a new owner of a 2000 gtp with a bad trans And i need some info on a tranny swap.Like what all would i need to make the non hd work in my car?im on a pretty tight budget and i can pickup a non hd for a few hundred bucks as compared to almost a grand for the Hd.ok heres the questions.
1-What year trans wll work?
2-What kind of extra parts will i need?
3-Are there certain non hds that are better than others?if so how can i tell them apart?
4-Also if theres anyone on here that has done this swap,i would appreciate all your help.thanks in advance.
I guess thats it for now.also im glad to be apart of this community.and hopefully ill be here for awhile.Later, Ray

[Sabrewings]

You'll need at the minimum a different flywheel on your engine, different passenger side axle, and PCM programming to account for the different gear ratio.