did a search but came up short. will the legs match up. will it work?

 

legs will line up - but the question is what obd will you be running? and the wiring !

 

it's a 99 usdm si engine.

 

The engine can be any thing you want b seires vtec- b16 or b18 but what chassis ! what obd!
If its all 99-00 si car & engine - the dizzy wont work right because plugs wont line up and would need to be wired - if chassis is obd2a like 96-98 civic or 96-99 i think it is teg- then you are fine slap the dizzy in and if it is using the obd2a wiring harness all should line up! I hope this explains enough

 

thanks. it's a 96 ek, but i ran an si engine with si engine, and dash harness.

 

It should line up. There are a few numbers and letter on the metal of the dizzy to tell you the model it came out of. I have an ITR on my B16A and it was converted to OBD2. Not sure how it was wired, but it does work.