if you're looking for performance, the 4th gen (88-91) hatch Si weighs close to 100 lbs less than even the VX/CX 5th gen, and still has the same double-wishbone suspension. The 3rd gen hatch Si (84-87) weighs close to 300 lbs less. The corresponding CRX (1st gen) is less than 1800 lbs (like 1760 I think, as compared to the 2100+ of the 5th gen cx/vx and 2300+ of the 5th gen Si), and although its suspension isn't as sophisticated, its just as effective and upgradable.

Of these generations, the 88-91 will be easier to swap, but either will accomodate a b-series motor.

Honestly, if you're looking for the best all-out performing civic, the 84-87 CRX is your best bet.