Hi: I ran the search function and found discussions on this general topic but did not see one directly dealing with my situation.

In my 69 Road Runner, I am going to replace my stock 383 engine with a 440. The 440 will have a Performer RPM intake and Edelbrock AVS 800cfm. I currently have a 383 fresh air intake assembly (I understand the base is taller than the 440 version). Any chance the 383 fresh air intake will fit under the standard steel, stock hood (without the fresh air box)? If not, will the 440 base or a drop base air cleaner fit? Any room for a carb spacer? Other ideas?

Any feedback on this manufacturer of fiberglass drop bases?

http://hybrid-fiberglass-solutions.com/products/custombaseplates.html

Thanks.