How do you get the stock tach to work with megasquirt?

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let me explain what i am trying to do..   i am trying to help another starquester who lives in a different country....he wants to do a 6 bolt axle conversion on his 4 bolt axle in his 86..   i bought a entire rear suspension off a starion with 6 bolt axles...shipping is going to be expensive, so its best to not send unnecessary parts...   will this 6 bolt hub...   http://s1.postimg.org/7frtj7ynj/20141019_165053_1.jpg     fit onto his 4 bolt spline shaft? ( this is the 6 bolt one....just using pi

Here are some parts that are left over from the G54B that came out of my 87 Starion. I have no use for any of it. All prices are obo. Located near Saginaw, MI. Cash and local pickup are prefered, but will take paypal or a check and ship at buyer's expense.   Block and crank $50 Complete cylinder head $50 Both have been outside for a year. Probably salvageable. http://i47.photobucket.com/albums/f197/fat_kid_racing/Starion/DSCN0387_zps70fcedcd.jpg http://i47.photobucket.com/albums/f197/fat_kid_rac