Gotcha, given that even 1996 and 1998 manual looms aren't straight fit together I'd take your current 4efte loom and try before you buy if possible. It's a bit awkward when both looms aren't from the same vehicle unfortunately.
As Skiny says you could retain the current E10 looms and use aftermarket management to control what happens on boost however it starts to get expensive once you get mappers involved.