There is only two types of prelude that come from japan
Si F22B 9:5:1 160PS 2WS BA8
4WS BA9
Si VTEC H22A 10:6:1 200PS 2WS BB4
4WS BB1
I have the BB4 and that has all the gizmos as only the jap VTEC`s got that, very rare ones have a small screen in the dash.
The Si VTEC is classed as the lightweight version.
All info on fourth gen you will find at
Honda Prelude - Wikipedia, the free encyclopedia.
This is handy as i found out, your standard gearbox is M2B4 (you`ll need that at some point)