Red1992V6Rs

Does anyone have the dimensions for the motor mounts to install an LS1 into a custom tube frame? I am designing a custom tube frame for a mid-engine vintage style racer. I'd like to get the distance between the mounts, the angle of the mounts, the hole diameters for mounts (to the engine and the frame), and any information regarding to a direct mount to a frame. Any information, what-so-ever, is greatly appreciated.

Regards,
Ryan