Best Flow manifolds

[May-39]

Not interested in headers...This project will be left up north and I don't want to be wrenching on it when I'm "done"

I've seen posts in other forums and/or other sites suggesting that B Body exhaust manifolds flow better, some Van mainfolds etc.
I looked on ebay at some 97 vette manifolds that look much better than the l31 vortec stockers.

Does anyone know if any of these manifolds will work on obs Tahoe 4x4?
By work I mean clear steering/frame and hopefully line up very similar to factory HD headpipes?

Thank you.

 

[meterman]

i went with the ss jab shorty headers bolt up to factory head pipe a little pricey but worth it

 

[Truckracer]

The worst short tube or long tubes will kill cast iron manifolds... But, if you must there is only one name, Brezenzki, https://www.castheads.com/manifolds-carb/exhaust-manifolds/log-style-chevy-ii-exhaust-manifolds/