Even then it's not too expensive to go stand alone these days. You can buy a megasquirt PNP unit with basemaps pre-loaded now for $800 (for the M20). That's pretty killer for a turn key solution. And if you're more industrious you can always build your own unit for about half of that.
But I know you already knew that.... That last bit was for those who may have not known
Luckily for you you only have 4 cylinders (if you can call that being lucky?
) I'll have to buy 2 sets of 4 just to get 6 unless I can find a parallel twin that uses separable throttle bodies.