will the v6 dohc engine from a 97 civic fit in my 94 civic ex if i have all the ecu connectors and such

 

a 350 chevy will fit with enough money.... any motor would. and yea i would switch to a dif ecu, not an accord unless its p28, def 1995 n previous. ull need a conversion plate for the tranny and i dont think the 3.0 is a dohc but i could be wrong. do a g23 instead, just use a 2.2 or 2.3 accord motor with a prelude top end, better yet use a 2.2 honda engine and a 2.0 prelude vtec head with k20 pistons. 250 hp, put the on a b series tranny with an f2b n your done. but if youre not experienced with swaps just drive ur car as it is.