wow, i can't wait for other people to post their number ones!! interesting thread!
funnily, i didn't like that engine when i turned the page! way too clean for me.
i bumped into this pic today:
i'm not saying it's the best looking engine of all, no no, but i really like the retro look! to it.
i can't think of any particular engines, but i loving seeing 010 etc. no msd or mallory dists for me.