Transmission not shifting real great 2004 Yukon XL Denali

[D-YukonXL]

going to be rebuilding the tranny for my 2004 yukon xl 1500 slt. any recommendations for trusted websites that sell rebuild kits? Im currently looking at a master rebuild kit on PATC (performance automotive transmission center) its a: master rebuild kit, 4L60E high energy clutches, with red eagle 3-4 power pack and pistons 2004-up

 

[drowssap]

I will just leave this here for those with transmission problems