When I use to deliver parts to the shop that was in your building before you got there, they actually did a 5 speed swap on a SVX. They spent about a week front start to finish (working on it on and off plus gathering some extra parts they needed). I remember them saying something about most the parts they needed were off a certain year of legacy? Either way when it was done they took the car out and said it was transformed, they never expected the car to be that fast and it was definitely worth the time put into it.