Hey,
I have a 1988 supra turbo with the 7mgte engine. I want to replace the stock bov, to probably the hks ssqv. Is this an easy thing to do? Do you basically just pull out the old one and put the new one in? Or is there some other stuff you have to do? Any help is greatly appreciated!

You need to order one that is compatible with your stock set up. Simply call the shop you are ordering through to make sure that you are getting the right part. Many universal kits come with a flange that needs to be welded to your existing system.