thanks for the reply guyz...i did check out the links and i did my own search on ls with gsr heads....all ive been readin about is it will cause problems? im not a big racer guy or know about the mods that well, i just want my 97 ls integra to have a little more power without all the maintenance....my car is automatic anyways, so i wouldnt wanna race it hard....so if i read correctly ...i will have problems later on the road after installing the gsr head on my ls motor? thnx in advance for replies