just bought the dc5 integra type r and i must say i absolutely love it !!
they are 2l with 220bhp and go pretty damn hard. as for torque the k20a engines have pretty good torque actually.
Haven't driven it much lately, just from dover to the boat and from calais to belgium about 320 kilometers in total. Has to go trough homologation first.. takes at least 3 months
Vtec killers are cams that cause the vtec to be on all the time causing a rough idle. and also giving it absolute shit torque on lower revs, but its for racing purpose.

Little video on a b18c
http://www.youtube.com/watch?v=dHVCyj4GqPo