to ZAP (Sports Package) or not to ZAP - that is the question

[PasPar2]

This is the ZAP package:

Sport Activity Package
255 Sports leather steering wheel
2LK 19" Y-Spoke Alloy Wheels (Style 335) with all-season tires
or 2LM 20" Y-Spoke wheels (Style 336) with performance tires
481 Sport seats
760 Shadowline exterior trim
775 Anthracite headliner

Some question to help me decide to those in the know:

* does the ZAP include any suspension modification or is it just whats in the list above? Can I expect a sport x5 on 18" oem wheels to ride EXACTLY the same as a non sport x5 on 18" oem wheels? ( I dont see anything about the suspension in the list above) Is the added "stiffness" due to the smaller side wall on the lower profile tires and nothing else?

* Has anyone come across real (non photo-shopped) pictures of the 19" 335? I saw the 336 in another thread - they are very nice but I'd prefer to avoid 20's if I can

* any opinion of sport vs non sport seats? never sat in sport seats - I have the comfort seat option now.

* is this the sport steering wheel? how is it diff from the non sport:

http://www.xbimmers.com/goodiesforyo.../P90055532.jpg

Thanks