69 C10 with a 6l90 transmission HELP

[reddogg]

Hoping to get some help. I have read that when putting a 6l90 that I would need to cut the floor and use the high hump. So I did that and put the cab in the frame and as you can see by the pic the end shaft and the 3 bolt flange are inside the cab. I have Holley motor mounts and tinworks frame stiffener with trans mount. I don’t know the angle of the engine and transmission. I know it should be 3 deg I just don’t know if that will give me the clearance I need. Let me know what I need to do. TIA