It won't be cheap for you drop a b18c1 into an 89. Pretty much everything up front needs to be changed out. May I suggest a zc engine and zc tranny. Both of which will bolt right up to your existing mounts, use your existing computer and cost under a 1200 bucks for both. There is a lot of bolt ons available for that motor and it makes the 89 pretty quick. I'm telling you this cause up until the yr. 2001 I had a fully built zc motor in my 89 Integra. Now aside from essential bolts on like the headr and intake, I sourced out and found JG made plenty of internals that used to beef up the motor. Between the civic zc and integra zc the diffrences are slim so parts from thec civic zc can be cross referenced over. Hope this helps.