This article really emerged from a desire to build a K20A engine. What chassis should it go in? After some seat time in the Honda NSX, a part of me feels that it would make a great platform for a K-swap. 

Honda K Engine Specification: 

90mm piston
Sleeved block
92mm stroke
Displacement 2.35L
Lightweight Rods 
Dry Sump System
Individual Throttles
Carbon Plenum
Toda Stage 1 Cams 

Weight Projection:

K24 swap - 50kg

Air conditioning - 40kg 

Spare tire - 13.3 kg

Tool kit/jack/air pump - 6.8 kg

Engine cover - 6.8 kg

Toe hook - 1.4 kg

Headers - 9.1 kg

OEM steering wheel/airbag delete - 9.1 kg

Wheels - 5.4 kg

Seats - 13.6 kg

Total Saving : 155kg 

NSX OEM Weight : 1,370 kg

NSX Lightweight : 1,215kg