Your probably going to have to make a bracket that "relocates" the holes back a little from the original one in the floor. That probably doesn't make any sense does it?

I'll send a pic when I go see my truck (sent it away when Hurricane Ike hit) and try to give you an idea if you want. I would check ebay for the seats. There's a lot of people that salvage wrecked cars and you can find a lot of parts on there
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- 1969 swb C/10 fleetside -LSx swap and Resto in progress
LQ4/TH400/Ed Curtis cam/Pro Flo intake/Brian Tooley Goodies ..... a couple snails may be trying to crawl into my engine bay...
-1997 Z/28 - LT1/T-56 - Bolt ons, 9 inch, built trans/clutch and on the bottle