You can PM Daniel, username: Seduction Motorsports. He builds turnkey cars for Greg at Vintage Spyders. I'm his secretary and he's actually prototyping a new Spyder 550 Fuel Cell as we speak.
Here is a link to the website where you can find engine packages and photos, there are also some other options available that aren't listed on the website. I'll also attach a link to the Facebook page where you view some more photos.
http://www.SeductionMotorsports.com/
https://www.facebook.com/SeductionMotorsports
Daniel will drop a line when he gets back into the office.