It sounds like you are looking for a product we have not released yet.
What you are needing is: an M90
Because: it has all the machining done to it already that you require and has the largest knowledge base on two forums to help you get it setup to your liking.
You don't want an M90 because: of the shape and your preference.
What you want is: a 45 framed sleeper with all the machining done to it.
Because: it fits your needs, preferences, and is what you would want to complete the build.
You don't want a 45 frame because: you don't have the tools to machine one with the required options for your prefer and require. You also (I assume) dont want to buy a 45 frame cheap, then sink 300 bucks into it from machine time. (Remember... You don't have the tools, so you have to pay for this service unless you have "a friend")
See where I'm going with this?
You have three options:
1) - buy a 45 frame and have it machined
2) - buy an M90 and adjust to the shape
3) - design your own frame and build from scratch (not using any OEM parts)
One and three require cash and they get you what you WANT.
Two gets you what you NEED immediately
Not crushing your build or dreams... Just laying it out for you in black and white.
Jai "P8ntbal4me" Menard