thats easy to find out what gastet you have! with the head on! look on the front of the engine right in the center where the bump is for the oil return.there is a little tab of the gasket sticking out to the left there should be a series of holes or notches cut out in tat tab and you just order that gasket weather it be a 1, 2, 3, 4, notch and state it's for a 1.6 ! wish i can post a pic. to make it easier ! but it should be easy to find! it's pretty visable! mine usually had a 3notch but you need to find out exactly what yours is! the gasket takes up the difference of the piston stickup past the top of the block!
well i hope that helps? can you put your location in your profile? some will not respond to ya if they don't know where your located!
thanks Duane