gimmick_gimmick

I just got a 1986190e and need some help. I was wondering if i could put on a 16v head or a turbo or something to spice up the ride. This next part is going to seem silly but where is the oil filter located??? I went to give it an oil change before work, pulled the plug and went to grab the filter and could not find it. I was running late so i just took off with out changing it but i want to give it another one the correct way. any info will be much appreciated... thank you :|