Unfortunately, the SBM doesn’t enjoy the vast array of different sized user friendly easy bolt on head options that you get with a SBC or SBF.
Of what’s “currently” readily available...... for something that’s an easy bolt on that doesn’t require a bunch of other associated hardware...... The TF is about the end of the line.
After that you’re looking at either Victor heads, Indy heads, or W series heads(which are no longer made).
Your power/ET goals and budget will likely dictate which road to take.
