I dont think there is a best engine swap it all depends on what u like and what u wanna do with the car. There is so buch bias in any direction. So here is lil bias from me, get rid of the auto for a manual, and boost it. I personally like it cause i have a turbo zc single cam vtec on like 5to 6 lbs and i put out 208whp and 190ft lbs in the hot ass dyno room. on a nice cold mornin it runs like a fat kid to an ice cream truck. and dont forget theres a lil more too it then just slapping a turbo on it im bein pretty vague.