89 Prelude, motors that will fit in it? + other ???

i'm bout to get a 89 prelude with a blow engin and i wanted to know if b16, 18 & or ect. would fit Or do i have to find another b20 series/ and if any one knows of any good sites to order body kits, carbon fiber lights, motors, and good cat backs 4 cheep. Plus my third question is if i have to fab. to make an automatic into manual?