Ok so replacing the head gaskets and have gotten over to the passenger side manifold. Cant get to the last 2 bolts closest to the firewall. Not a whole lot of room in there. Any ideas, tips, tricks to getting these out?

 

Have you tried getting the bolts from under the car as well? When I did headers on my ls1 i bought a ratchet with a pivoting head which helped a lot

 

Or maybe a ratcheting wrench?

 

i removed the bolts that connect the Y pipe. Not room to get up there from underneath. Once I removed the valve cover I had enough room. I do have a pivot joint for my ratchet its saved me numerous times. Got the manifold off and the ps pump unbolts but cant get the bottom hose off of it. guess ill try some pb blaster and/or a torch..