Engine Which Intake for 363

I’d believe you could make the side entrance upper work, but not the front entry. I’d guess the side entry Holley would involve either convertible motor mounts or k member spacers as well. There are a couple companies that make the spacers, maximum motorsports is one of them.

A note about the fuel rails with the trickflow intake, I have used stock sn95 rails with the box r before. Others have used stock fox rails, but some aftermarket regulators have clearance issues.
I am going to get half inch spaces and get the Box R. I am 52. This will be my final engine, so I might as well get exactly what I want. Thanks for your advice.