Small block 426 stroker with trickflow heads. How much HP.

Are the port openings in the magnum version of the Indy intake pretty close to a normal Magnum size?

I haven’t had a regular Indy SB rectangle port manifold(360-3R) here in ages, but I recall those as having the W2 bolt spacing, along with ports that are wider than std LA heads.
I really don't remember. I sent the intake out to have it ported. The EQ heads i had were ported.