MPFI Intake Brace/Gasket

hi,

When installing my MPFI intake manifold onto the DPFI engine will I need a brand new gasket or can I use the one that came with it?
Also, that brace that holds it up. It just easily comes off the D16 right and bolts onto the D15?
Any tips on how you guys got the bolts loose on the bottom of the manifold? They are extremely hard to get to from under the car.

Thanks

Regarding the brace, I tired to get it off of three different cars and the junkyard, and none of the bolts would budge.
I used WD-40, but they are in such an awkward postion and I just couldnt get them off.
I think it is best to replace the gaskets no matter what but I'm not sure.

yeah u should replace the gasket any time dont reuse old gaskets