Tbi plate help

I don't know but it should be pretty easy to make. Get on ebay and look at some of the old Holley stuff, "Pro-jection" etc. They used an adapter, I'd bet it would fit or maybe re-drilling the mounting holes

Here's one from Summit

http://www.summitracing.com/parts/hly-17-41?seid=srese1&gclid=CJf1tOiysr4CFQmSfgodh1kAFw