Top Shift 48 Pickup 3 Speed Question

[leon bee]

This is kind of an ignorant question. I want to stick an 8BA and this transmission into my 46 pickup to see how things are gonna go. But is there anything special I need to know before I pull the top and shift lever, etc., off the trans before lifting things into the truck? I mean, is anything gonna jump out of there? Trouble lining up shift forks to put it back, anything like that? Thanks!