D15b into a dx 92 civic
#4
its a direct bolt in. i had one in my 93 coupe for a while. the only thing i had to modify was the tab on the back of the manifold for the purge solenoid. the tab was there but i drilled a hole and tapped it so it would bolt on like stock.
#8
well in a dx you'd need to wire up vtec but i assume you already knew that.
i have a d15b with a dx tranny in my cx. Gearing isnt as bad as ppl make it out to be. the motor makes enough power that it doesnt bog... i love my dx tranny for boost.