I ran a completely stock transmission for 10K miles. When I finally cracked the case to change it I was on the verge of destroying the diff. The gears had nasty wear marks and gouges in the teeth and it would not turn freely. The clutch was pretty cooked too. Just a little bit of blue here and there. The motor mount is going to be crucial. You have to loose the stabo shock to fit the pipes. I ran without the insert to see what would happen. The intercooler hit the hood so hard when it rocked I have a small dent in it. I put in the urethane insert and it was better but still had wheel hop. I then had to have a solid mount welded between the subframe and the rear motor mount to make the wheels just spin instead of hop. The suspension was another story. I also had stock struts and springs for a while. The back end would drop so hard at the track it looked like I was dragging bumper. Koni's and Ground Controls are what I used to fix it.
Moral of the story...you can put it on a stock SVT but plan on getting upgrades....soon.