Im going to drop a new motor in my '93 Integra GS. It currently has a B18A1 paired with the YS1 5-Sp tranny both with ~244k miles. I can get a rebuilt B20 for about 1000, a b20 from hmotors for 650 +shipping, OR i was contemplating picking up a rebuilt GSR head (P72?) a kit from golden eagle and a few things from ARP. Which one would give me the best numbers from day one? What about upgrade potential? Thanks for the input guys.

 

If you're staying NA, the B20 has more displacement and with a GSR head, it basically becomes a 2.0L LS/VTEC. On boost, I would suggest building the LS...