engine swap questions (easy)

Hey guys, quick question but you have to be 110% positive about this. I have a friend who has a B16 (99-00 Si engine I believe, right?) in his 91 Civic. He wants to get a Vortech SC for naturally his 99-00 Si engine. But will it fit in the engine bay of a 91 Civic? There is a no return policy on SC where hes getting it from so he wants to me really really really sure its gonna fit. Thanks in advance!