gasket matching is overrated and I think you made yourself spend more money than needed. With the ported intake for a 58mm TB, you kinda need to get a big TB.

If the ports on the intake are larger than the gasket or the port openings on the heads then it's worth it to get rid of the turbulence...

The LT1 intake is a bottleneck, you can't delete that. lol.
I was under the impression that unless you know what your doing you can cause more loss than gain if you try to match the intake.