the vg asks for diff plugs than the ve, almost a 10 dollar diff per plug 2, at the dealer anyway, other stores tho have the same plug listed for both engines, i bought my ngks from nissan, the wrong ones were in my 92 se when i bought it, i also replaced some coils to at the same time so im not sure what fixed the stumbling issue exactly, but the coils i took out werent cracked or anything and ive never bothered to test them as the issue was fixed, courtesy has em at a 6 dollar diff a piece as well and the code on the plugs are diff, im guessing the dohc ones run hotter
dohc
http://www.courtesyparts.com/22401-p...-p-183553.html
sohc
http://www.courtesyparts.com/22401-p...s-p-44570.html