fuel pressure reg

I have an AEM fuel pressure regulator that I'm planning on mounting, the issue is location. If I were to use it after the rail like stock there is not a huge amount of room on an RVR, the firewall leans forward like this ↓ I'm also going to install a strut brace, but it can only work with the...

Im getting back into the gsr project build after selling my s15 and have just ordered a brand new Garrett GTX turbo and 1200cc injectors, for E85 Conversion on the car. What fuel pressure reg would be reccomended to use? I was looking around the $200 mark to spend. Also i have 2 044 external...