These aren't generic v8s, there are no off the shelf high rise intakes
or adaptors.
What you need is an intake manifold for a 12a engine. You can get one
at
www.racingbeat.com,
www.mazdatrix.com and maybe other places.
Or you can post a wanted add in the classifieds and get a used one or
look in the classifieds and see if anyone is selling what your looking for.
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1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs
Project Fat Nikki Budget 12A rebuild Video setup < $30.00