stats for pike heavy PandM units

Also posted this question under 'rules'

I'd like to portray units of early war royalist armies as pike-heavy. The lists don't do this, giving standard stats. I understand I can change the SM modifier to 3, but should I also change the MM modifier to reflect the greater number of pikes in melee? Has anyone got ststs for pike-heavy P and M units?

Would they be closer to the late TYW pike and shot? Or, just give them SM-3 and an MM of +1?