Looking for advice/tips

I always footbraked, so I can't offer specific advice on launching with a 2-step. However, major reasons to launch with a 2-step are to maintain consistent launch RPM while keeping that RPM low enough to keep the car from overcoming the brakes and creeping. (With a trans brake, you're "locked" in place by the trans and can also go much higher on the launch rpm without concern for "creep" in the staging beams.) Launching a significantly different RPMs may also require some carb tune-up adjustments, especially if you don't have a trans-brake.

Your torque converter also affects how the car launches and what the car likes to launch harder/run faster. It needs to be matched to the rest of the combo for best results. Naturally a single plane intake will like a looser converter than a dual plane. But switching intakes can also affect the optimum carb tune!. I suggest sorting out the current combo before changing intakes.

But either way, in bracket racing it's much more important to have consistently good reaction times rather that fastest ETs. If you can try different launch RPMs to get better RTs and maintain ET consistency/predictability, it will go a long way to winning races. You can also vary RTs with staging techniques, front tire diameter and air pressure.

.....or do you have a stick???