1990 Volvo 740 base model.

I've sprung a leak in my exhaust manifold where it meets the engine block. (You know, the red 4 headers that go to the block.) In any case, I've replaced the gaskets twice now, and it keeps springing a leak after a few hundred miles. It might be warped, but I'm not sure yet. I spoke to a good Volvo repairs place and they said that it might be because I used some cheap gaskets, and that I should try using some nicer onces, or original Volvo ones. In any case, I look at http://www.volvoworld.com and they have gaskets. Here's the kicker though: I can't tell which one is the proper ones to get.

Here's what I found for my make/model/year:
Exhaust manifold gasket kit, set of 4 740 B230, 740 Turbo, 760 Turbo 84-92 SC1378217 New 8.98

so I put that in my cart. But after looking some more, I came across this as well:

Manifold gasket, between front pipe and exhaust manifold 740 not Turbo 85-92 SC3531326 New 1.64

Now, granted the second one is just one gasket, but are they the same? Would I be able to just buy the second item 4x and get the equivalent of the first? Or are these different parts altogether?

Thanks, any help is much appreciated.