OEM is good but i dont see any problem with using pep boys parts... i know there are 10000 guys on here that would rip me up for saying such a thing....

i dont know enough about oil pumps or oil pump volume or oil starvation to recommend one thing or another to you.... i do know though that in an ls/vtec setup using a vtec pump is recommended... are the ITR pumps any different than the gs-r pump? stuff id look into...