Feel like my 440 should be faster

What size converter would yall recommend for my setup? If I ended up going to trick flow heads one day would that same converter still be applicable? (which I believe have a smaller chamber volume and would raise my compression to about 10.2:1)

I will definitely be going to at least 3.73 or even 3.91s out back this winter.

If you’re looking for a big move in the seat of the pants feel, the TF heads and a good 9.5” or 10” converter is the right call.