Yes but I’d run the RPM & ether bowl port the head or look at a set of new cylinder heads. The cylinder head can benefit from a little work. Valve job/bowl work. After that, an aluminum head may prove to be better and cheaper.
You didn’t mention what size Thumper. Just the small one.
The Edelbrock Performer is equal to the factory manifold.
The RPM fits under the hood. Use a Mancini Racing drop base air cleaner.
