[xlr8or]

I know they changed the shape of the cowl and the windshield but not sure what number. They no longer make the old windshield so if it breaks that may make it difficult. The old ones had the glass epoxied into the frame so it's a pain to just replace the glass. The side pipe brackets were a little weak in the early cars and needed reinforcement.
I think the rear suspension problem was related to the front mount brackets for the center section. It's an easy fix that just requires some beefing up. I've spent many hours working on and driving a friends SPF that is in the early 300's range on the serial number and all three of those issues came up.