First off, a H22A weighs more than any of the B series engine period. Second, B20 is just a stroked B18, 20= 2.0 litre 18= 1.8 litre. Ask anyone of the Integra people who know what they're talking about, there isn't much difference in weight they're the same. I don't mean to jump on here and act like I'm an expert, but if you want to end any type of stipulation as to what engine is better, and if indeed you do have the cash like you say you do such as 13k. Give Jeff Schaeffer a call down in Fullerton California at Import Builders or on the net Importbuilders.com Look at the power of the Dominator III package CRVTEC 225 whp as much as 243 same build. The best package you can get. In a Integra with a slight weight reduction 15 or 16's and some aggressive tread high 12's, no weight reduction 13's all day. In a CRX what like low 12's maybe high 11's just a guess on my part. Email the guy and ask him to me he has the best offer you'll ever get.