Your intake choice depends a lot on what cam and lifters you have in your engine and ultimately, how high you want to rev it. Edelbrock doesn't make an RPM Performer for a Cleveland but they make a Performer. It's basically the same intake as the old F351-4V and has an RPM range of about 1500-5500. My choice for a 4V Cleveland intake would be a Blue Thunder which is sold through Probe Industries. It's a high rise, large runner dual plane design that is capable of producing excellent torque numbers as low as 3000 RPM but will still flow enough to make almost 500HP at nearly 7000 RPM. You have to run a distributor with a small diameter cap with that intake though. That's as easy as removing the big cap, it's rotor and the distibutor to cap adaptor and replacing it with an old 60's style small cap and rotor. For single planes there's also the Torker which is good from about 3300 to over 7000 RPM and the Weiand Accelerator which works almost as good in the same RPM range but is lower and fits under some hoods better. From the dyno test I've seen though unless I was after a very mild combination I'd go with the Blue Thunder intake.