1972 Blazer 4x4 LS swap, Mounts?

[1028jdn]

Just pulled my 454 out of my blazer and sold it. Now going to put in a 5.3 or 6.0 LS with a 4L60e and was wondering about the crossmember and mounts. Do I need to replace the cross member or can I just buy some different mounts to make it work. If I need to buy the cross member who do you suggest from? Dirty Dingo, Pacific Fab, etc? I have searched on here alot and have seen people doing it both ways and some who have made their own. I don't have the luxury or talent of making my own.