Well a LS-Vtec fit into a SI's engine bay and well a B20B-Vtec fit in the engine bay?

 

I hope your trying to spell wrong on purpose.... It's Will buddy.. . ls vtec will fit fine.. and b20 is like 2cm taller than the ls.. so the hood will hit a little... but u can fix that easily..

 

stock b20 intake manifold wont eally fit, put the ls one on

 

yes, yes. please use the search function in the upper right hand corner before asking questions.

 

a b20 is 7mm taller than a b16 or b18 block
got a crvtec in an 88 hf had to pound in the side by the alternator so it woiuld not hit, and also cut out the webbing in the hood to get ti to clear. otherwise it fit fine