Maybe try one of these? Not sure how it works with your budget.
http://www.racingbeat.com/RX7-1975-1...nts/16464.html
Tuning a 600 to work on a stock port 12A might be a challenge. Not sure what your setup
might be so can't really say if it will work easily.
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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
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