Cobra VC's

I am looking to buy these VC's. The will sit a top TW heads with Crane Gold 1.6 stud mount rockers and a ported 94-95 Cobra intake. I did a search about fox VC's on SN95's. Most of the threads were about what fits with stud mounted rr's or will a spacer be needed with a TFS intake. Another thread mentioned something about the oil filler tube location being different for fox vs SN95's. Will these VC's fit and what problems to you foresee I might run into?

http://cgi.ebay.com/ebaymotors/1986...ewItemQQcategoryZ34202QQitemZ4592889219QQrdZ1