The small 3/8 pipe sticking up in front is for the dipstick. Use a Big Block Chevy (I am not kidding) dipstick and cut to length. You can put the two tubes together using a short piece of fuel line and hose clamps. Use the upper bolt on the water pump to bolt down the dipstick. The stock dip stick reading will be very close. Fill the pan with 9 qts of
oil and check and mark as needed. The rear 3/4 inch line is an
oil return line from the puke tank. The dip stick hole by the
oil filter pad will need to be blocked. If you can't tap and plug it, you can machine a plug to press fit in and hammer it in. Of course, in an emergancy a bolt slathered with silicone will work for a while.