OK, have finally been suckered in to buying some headers off Ebay. I have two sets of pristine original manifolds, so going back won't be a problem if need be. If these don't work or fit I'll hang them on the garage wall with all the other crazy stuff I've gathered over the years. First link below is the pair I bought:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7935477641&rd=1&sspagename=STRK%3AMEWA%3AIT

Now that they are in the mail, I need to figure out what issues I'll have. Big one I've seen on the FGF site is the oil filter problem. See pic below:


It looks to me as if my filter assembly IS off-set already, meaning its not screwed in directly to the block. Am I right, or is this a standard set-up and I'll need to buy an extension assembly to get the filter even further away from the block to let the headers slide in? Would appreciate any prior experience as well as gasket comments. Thanks in advance guys and girls! :p