Well, the Turbocoupe motors I am told have stronger bottom ends than the standard 2.3. However, I remember MM&FF trying to kill one with a lot of NOS and could not do it. A lot of people are going to suggest the Turbocoupe/SVO route, because it is a lot easier to go fast for less money on your part. These two websites have prolly more info for what you are wanting to do however.
www.turboford.com
www.turbotbird.com