ok just got a mechanical fuel pressure guage and a cup to fit it but after looking at the cowl area, there's nowhere to mount it and close/open the hood without the guage in the way. The hood is 2.5" fiberglass cowl unit(hood cowl is too small for it to fit also). Its pretty much the hood line and the windshield right behind it, theres no surface or so between the hood line and the windshield for mounting the base of the cup....any help or ideas will be greatly appreciated

Well, you did say any ideas...
I would bite the bullet and use an electrical gauge instead, and put it in the cockpit.
Reasons:
1. Cowl mounted gauge is going to be hard to see over the dash when sitting back in the seat.
2. Reduce pressurized fuel plumbing in the engine compartment (fire hazard).
3. If it is a boosted application, monitoring fuel pressure is critical (lean-out backfire, melted pistons).
4. Gauges don't survive well out in the weather.
There are only 4 wires to hook up on a lighted gauge, it really isn't that hard.
(+) to ign+
(-) to engine block
(lamp) to ign+
(s) to sending unit
The sending unit needs to be grounded (such as metal piping going to carb, or fuel rail on EFI)
Jegs #105-3361 or 105-4361 for carb
Jegs #105-3363 or 105-4363 for EFI
The prices (high) includes the sending unit which are $40-$50 by themselves.

Only other option is to cut a knotch in that pretty fiberglass hood (ouch).

Cheapest setup for carb:
GAUGE.
SENDER.
Cheapest setup for EFI:
GAUGE.
SENDER.