I got the FPR out without removing the rail - You need to pull the stud on the back of the head to allow the rail to move a little. You also need to remove the bolt on the firewall for the clamp holding the heater hose in place to get enough room to turn the allen wrench. It is not easy but it does come out, there seems to be some thread lock residue on the three bolts hold the FPR.
When I got the FPR out, The o-ring was chewed up pretty bad and looked like it was definately bypassing. I drew a vacuum on it and the FPR does not seem to leak through the manifold port. I am going to replace it anyway - I don't want to go back in.
The intake elbow was extremely tight - I thought my 1/4" ratchet was going to break trying to get that thing off. I had to move up to a 3/8" to get one of the bolts off.
It looks like the manifold gasket could be reused (I wouldn't do it though) because no gasket sealer was used. The gasket had a thin coating of what looked and smelled to be a gas and oil mix, so I think I found a leak point there. I would say someone just torqued down the bolts to fix a leak sometime in the past.
I still don't know why I got the gas smell from the hose. I just hope that I don't have part of the o-ring stuck in an injector.
Aaron