Yes, the welding of the front D2's is "normal", they are for the Starion but you do need to attach the spindles to the lower strut bodies. They are not sold with spindles attached, and unlike other cars it's the only way to bolt them up to replace the stockers.
As far as the Ikea status quip by tsTKI, these are quality parts, each is fully tested and comes with individual test result sheet for each coilover. D2 is heavily involved in motorsports worldwide, good R&D for their products. I personally think they really make the Starion a better car with no negative impact, and are miles ahead of a strut/spring combo, no offense to anybody but I've had all the setups on my cars over the years.
I would rather we had more than one option though, such as hot bits or kdw etc.