Man im not hating, to do this takes skill and i admire you for the effort..... But why??? you can find a wrecked mx6 for under $1000 and do a little body work, or you can get a great running champ for around $1800, even if you have to jump through hoops to get one its stilll MUUUUUCH easier than doing a swap.
And besides those facts, Your car will never be an LS.
Maaan i hope these cars arent like the old mustangs, where the cars built for the engine it comes with.. iv drivin some very rickety 5.0 swaps with 4 cylinder suspension.