I have been using the "pull the fuel pump fuse and let the car stall" method of relieving pressure. I learned this weekend how to use my fuel pressure gauge to relieve pressure instead. I don't know how much fuel should spurt out the schraeder valve if doing so manually, but spraying fuel is really never a good idea.
The advantage to the aftermarket FPR's are that the vacuum port isn't on top, so it can be a little taller than stock, but maybe 2 millimeters. That isn't much. And there is no way to adjust the fuel pressure short of pulling the upper intake off. You just can't fit any tool under the upper and expect to move the adjustment screw. Also, the unit on the right (the one you would be using - 2 bolt style) looks like it will interfere with the rod connecting the IMRC butterflies. After this weekend, I'm of the opinion that NO aftermarket FPR will be useable on the Duratech. It is just too darn tight in there.
