Here is their response they sent
Damian,
From what i remember about the SVX, it should be a bolt up swap.
Meaning,
the STi motor should bolt to the SVX Trans, and if you wanted to put an
entire STi drive train in the car, the sub frames should match up the
SVX
body w/ out any modification. The Wiring as you mentioned would be the
tricky part, however, thats one of our specialties, and im sure we
could
figure it out.
-Paul
Paul Scott Jr.
ECS Performance
20 Warehouse St.
Springfield MA, 01118-1058
Phone: (413)-214-6145
Fax: (413)-214-6536
www.eastcoastswappers.com