Which is the better buy: a '93 Lumina Euro or a '93 Lumina Z34? What are some common problems with them?

I got in a fender bender with my old '91 Lumina and it's a pain to find a new hood and bumper so I'm considering just buying a new Lumina. I've found a '93 Euro and a '93 Z34. I've heard the Z34 engine is more compact, thus more difficult to work on. Is this true? Just wondering if the Euro or Z34 would be the better buy.