IIRC, the FP manifold has full length bolts in the back, and shortys up front. Those are all the same long length, which would fit the stock manifold.
I wouldn't go stainless. Go OEM:
http://www.jnztuning.com/product_inf...b56b5de9f61987
Or if you want ARP:
http://www.ffwdconnection.com/dsm/bo...turbobolt.html
Be sure to use high temp copper anti-seize when you install, not the low temp stuff.