I Agree with Tom V.
I've been Building Performance Engine for 20 Years...I've Learned to thoroughly inspect the Parts offered by the Various Manufacturers and Draw My Own Conclusions..
My First Experience with Professional Products was about 5 Years Ago..
I was Building a 302 Ford for a 66 Mustang and the Customer was Running Short on Funds..The Price was Attractive, so I Considered Using their Dual Plane Intake Manifold..
" What a Huge Piece of Crap ".. Out of the Box & Right Back in the Box..
What Did I Learn about Professional Products: Cost is the Primary Concern and Quality is Far down on the List of Priorities..
I've Inspected more of Their Products Since & Still Not Impressed..
As Far as Summit Products..Don't Buy any of Their Anodized Fittings..
The Swivel Fittings that I've Tried Leaked Immediately..
( No Wonder They Swivel So Easily.)
" Be Careful ".... Some on This Board will Sell Anything...
JMO..."Professional Opinion"
Larry Snyder..
( Certified Master Technician, Certified Master Machinist, Certified Advanced Engine Performance Specialist.)