To keep 440-1 top end or not

Dont have pics at the moment but I can tell ya I only cut inner fender sheetmetal on mine. The front edge of the cut is right up to the shock support structure,driver and passenger sides. The back edge is about 1 1/2" from the firewall. The upper cut leaves about 1" of the flat surface and the bottom cut is about 4" above the frame rail. I also cut about 1" off the bayonet end of each shock. My steering column jacket was 'modified' many years ago. I think the only problem it might give you is with #7 plug.