like he said z6 is the best bang for your buck and it will still run with ls's if done right ive got a z6 and i can walk away from my boys two swapped crx's ones a b18a1 and the othr is a b16a just depends on what you do to it mines all stock with bolts on's and sfc-vtec controller lightweight pulley and p28 with a adj fpr in a crx its all about power to weight ratio the ls's are still hevier no mateer what so i say a sohc vtec is your best bet and there are still a ton of them around and a ton of parts out there just my 2 cents