New gearbox help!!!

hey guys just wondering if any of you have put in a gearbox for a gen 4 before and if so if there are any pointers or troubles you came across. ive decided to change this one myself so i can learn for future aswell im done with paying the mechanics to change the gearbox and clutch they cost a fortune

You're going to need socket wrenches which fit into very tight spots since your transmission bolts mounted to the engine block are going to have very little clearance in there. Wd40 will be your friend here