Ok, short and sweet.

Potential blocks ("bottom ends"):
B18A (90-93 Integra)
B18B (94-01 Integra)

Potential heads ("top ends")
PR3 (B16A Si-R, B17A GS-R)
PR3 (B18C Type R, B18C5)
P72 (B18C Si-G, B18C1 GS-R)

Then you ream some holes, run a new oil line, and more modifications depending on how high you want to rev it.

The LS/VTEC hybrid is not generally considered a "noob" engine because it must be custom built depending on application.