What are some of the best dual plain heads for a 2v Clevo?

Doubly plain? that's a trick!
I assume you mean dual plane intake manifolds for 2V cleveland?
The Torque power high rise
http://users.pipeline.com.au/tpm/f-dual.htm
has received good reports and the new Edelbrock performer air gap is also a good'n.

Pete.

opps i mean plane lol its late im off to bed

edelbrock performer's arent too bad, but if you want to get the best for a clevo I would reccomend the AIR GAP by edelbrock these come in dual & single plane, they sometimes pop up on Ebay for around $400-550 new
worth the money though, as they are simmilar to a Jack Rousch design that I used a few years ago, but mine cost over $650 at the time