Hotchkis Sport Suspension Leaf Springs

It looks like my current ride height is the same as Red Stripe's, mine is currently at 26" with a 315/35r17 tire, so I can't see why changing to these would change my driveline angles at all. Unless the part of the spring the axle rides on isn't flat like my current springs. Autoxcuda is a good bit lower, I would be in trouble if it rode that low, but I assume it's because it's a different shape wheel arch on his car.
Axle wrap is a concern too, I have an adjustable snubber, but running out of room to lower it and not have it smash into the body over rough roads, which most Michigan roads are.

Thanks guys.