b20's can be found for 700-800, so its a very economical swap, especially if you're on a budget. the only downside, in my opinion, to the b20 is that its an suv class engine, making you fail visual smog inspections anywhere u go.

i drove a b20 integra the other day and its definitely a big improvement over the LS. I like GSR's too but when people say b20's are torquey, they're not kidding.